Sam is competing in a diving event at a swim meet. When it's his turn, he jumps upward off
the diving board at a height of 10 meters above the water with a velocity of 4 meters per
second.
Which equation can you use to find how many seconds Sam is in the air before entering the
water?
If an object travels upward at a velocity of v meters per second from s meters above the
ground, the object's height in meters, h, after t seconds can be modeled by the formula
h = -4.9t² vt + s.
0 -4.9t² + 4t + 10
10 = -4.9t² + 4t
To the nearest tenth of a second, how long is Sam in the air before entering the water?

Answers

Answer 1

The time is 4.6 seconds when Sam enters the water again

How to solve the equation

So, we have the equation:

0 = -4.9t² + 4t + 10

Now, we can solve this quadratic equation for t using the quadratic formula:

t = (-b ± √(b² - 4ac)) / 2a

In our equation, a = -4.9, b = 4, and c = 10.

t = (-4 ± √(4² - 4(-4.9)(10))) / 2(-4.9)

t = (-4 ± √(16 + 196)) / (-9.8)

t = (-4 ± √212) / (-9.8)

The two possible values for t are:

t ≈ 0.444 (when Sam is at the surface of the water, just after jumping)

t ≈ 4.597 (when Sam enters the water again)

Read more on quadratic equation here:https://brainly.com/question/1214333

#SPJ1

Answer 2

Answer: The time is 4.6 seconds when Sam enters the water again

How to solve the equation

So, we have the equation:

0 = -4.9t² + 4t + 10

Now, we can solve this quadratic equation for t using the quadratic  formula:

t = (-b ± √(b² - 4ac)) / 2a

In our equation, a = -4.9, b = 4, and c = 10.

t = (-4 ± √(4² - 4(-4.9)(10))) / 2(-4.9)t = (-4 ± √(16 + 196)) / (-9.8)t = (-4 ± √212) / (-9.8)

The two possible values for t are:

t ≈ 0.444 (when Sam is at the surface of the water, just after jumping)

t ≈ 4.597 (when Sam enters the water again)


Read more on quadratic equation here:

brainly.com/question/1214333#SPJ1


Related Questions

Make a box plot of the data. Average daily temperatures in Tucson, Arizona, in December:
58, 60, 59, 50, 67, 53, 57, 62, 58, 57, 56, 63, 57, 53, 58, 58, 59, 49, 64, 58
Find and label the 5 critical values

Answers

Five  5 critical values for the daily temperatures in Tucson, Arizona, in December: are- 49, 56.5, 58, 59.5 and 67.

Explain about the Box and whisker plot:

The graphical tool used to illustrate the data is the box and whisker plot. For the data to be plotted, some summary statistics are required. The first quartile, median, third quartile, and maximum are those values. It is applied to determine if an outlier exists in the data.

Given data for the Average daily temperatures in Tucson, Arizona.

58, 60, 59, 50, 67, 53, 57, 62, 58, 57, 56, 63, 57, 53, 58, 58, 59, 49, 64, 58

Arrange is the ascending order;

49, 50, 53, 53, 56, 57, 57, 57, 58, 58, 58, 58, 58, 59, 59, 60, 62, 63, 64, 67,

n = 20

n/2 = 10 th term - 58

(n + 1)/2 = 11th term - 58

The median Q2 - (n/2 + (n+1)/2) /2

(58+58) / 2 = 58

Now, consider the middle numbers before the median for lower quartile :Q1 - (5th + 6th)/2

(56 + 57) / 2 = 56.5

Consider middle numbers after the median for upper quartile:

Q3 - (15th +16th)/2

(59 + 60) / 2 = 59.5

Five  5 critical values are-

49, 56.5, 58, 59.5 and 67.

Thus, the  Box and whisker plot for the all four estimated quratiles are formed.

Know more about the Box and whisker plot:

https://brainly.com/question/28098703

#SPJ1

compare all the complexities for the sorting algorithms radix sort, counting sort, bin sort.

Answers

The time complexity of radix sort, counting sort, and bucket sort is better than many comparison-based sorting algorithms.

How to compare all the complexities for the sorting algorithms radix sort, counting sort, bin sort?

Radix sort, counting sort, and bin sort are three non-comparison based sorting algorithms that have better asymptotic time complexity than many comparison-based sorting algorithms.

Radix sort sorts the elements by comparing the digits of each element starting from the least significant digit to the most significant digit.

The time complexity of radix sort is O(d(n+k)), where d is the number of digits, n is the number of elements, and k is the range of values of the digits. The space complexity of radix sort is also O(n+k).

Counting sort works by counting the number of occurrences of each element in the input and using this information to determine the position of each element in the sorted output.

The time complexity of counting sort is O(n+k), where n is the number of elements and k is the range of values of the elements. The space complexity of counting sort is O(n+k).

Bucket sort works by dividing the input into a number of smaller buckets and sorting the elements in each bucket individually using a sorting algorithm such as insertion sort.

The time complexity of bucket sort depends on the sorting algorithm used to sort the individual buckets. The space complexity of bucket sort is O(n+k).

From the above complexity analysis, it can be concluded that:

Radix sort has a time complexity of O(d(n+k)), which can be better than O(nlogn) in some cases where the number of digits d is small.Counting sort has a time complexity of O(n+k), which can be faster than O(nlogn) in cases where the range of values k is small compared to n.Bucket sort has a time complexity that depends on the sorting algorithm used to sort the individual buckets, but can be efficient for distributing elements uniformly across buckets.

Overall, the time complexity of radix sort, counting sort, and bucket sort is better than many comparison-based sorting algorithms.

The choice of sorting algorithm depends on the characteristics of the input data and the available resources, such as memory and processing power.

Learn more about algorithms

brainly.com/question/22984934

#SPJ11

What is the coefficient of x9 in the expansion of (x+1)^14 + x^3(x+2)^15 ?

Answers

The coefficient of x^9 in the expansion of (x+1)^14 + x^3(x+2)^15 is 320322.

To find the coefficient of x^9, we need to look at the terms in the expansion that have x^9.

For (x+1)^14, the term that includes x^9 is:

C(14,9) * x^9 * 1^5

where C(14,9) is the binomial coefficient or combination of 14 things taken 9 at a time. We can calculate this coefficient using the formula:

C(14,9) = 14! / (9! * 5!) = 2002

So the term that includes x^9 in (x+1)^14 is:

2002 * x^9 * 1^5 = 2002x^9

For x^3(x+2)^15, the term that includes x^9 is:

C(15,6) * x^3 * 2^6

where C(15,6) is the binomial coefficient or combination of 15 things taken 6 at a time. We can calculate this coefficient using the formula:

C(15,6) = 15! / (6! * 9!) = 5005

So the term that includes x^3(x+2)^15 is:

5005 * x^3 * 2^6 * x^6 = 5005 * 64x^9

Adding the coefficients of x^9 from both terms, we get:

2002 + 5005 * 64 = 320322

Therefore, the coefficient of x^9 in the expansion of (x+1)^14 + x^3(x+2)^15 is 320322.

To learn more about expansion visit : https://brainly.com/question/13602562

#SPJ11

Nora, a psychologist, developed a personality test that groups people into one of four personality profiles—
A
Astart text, A, end text,
B
Bstart text, B, end text,
C
Cstart text, C, end text, and
D
Dstart text, D, end text. Her study suggests a certain expected distribution of people among the four profiles. Nora then gives the test to a sample of
300
300300 people. Here are the results:
Profile
A
Astart text, A, end text
B
Bstart text, B, end text
C
Cstart text, C, end text
D
Dstart text, D, end text
Expected
10
%
10%10, percent
40
%
40%40, percent
40
%
40%40, percent
10
%
10%10, percent
# of people
28
2828
125
125125
117
117117
30
3030
Nora wants to perform a
χ
2
χ
2
\chi, squared goodness-of-fit test to determine if these results suggest that the actual distribution of people doesn't match the expected distribution.
What is the expected count of people with profile
B
Bstart text, B, end text in Nora's sample?
You may round your answer to the nearest hundredth.

Answers

Rounding this to the nearest hundredth gives an expected count of 120 people with profile B.

What is an expected count?

Expected count is a term used in statistical analysis, particularly in the context of contingency tables and hypothesis testing. It refers to the number of observations that would be expected in a particular category of a contingency table if there was no association between the variables being examined.

Expected counts are calculated by multiplying the marginal totals of a contingency table to obtain the total number of observations that would be expected under the null hypothesis. Expected counts are then compared to the observed counts in the contingency table to assess whether there is a significant association between the variables being examined.

To find the expected count of people with profile B, we need to multiply the total sample size (300) by the expected percentage of people with profile B (40% or 0.4):

Expected count of B = 0.4 x 300 = 120

Rounding this to the nearest hundredth gives an expected count of 120 people with profile B.

To know more about expected count, visit:

https://brainly.com/question/29052046

#SPJ1

Verify that the vector Xp is a particular solution of the given system. X=(2 1 3 4) X-(1 7)e^t; Xp=(1 1)^et+(1 -1)^te^t For Xp= (1 1) e^t + (1 -1)te^t , one has since the above expressions _____ Xp=(1 1)^e^t+(1 -1)t^et is a particular solution of the given system.

Answers

The vector Xp=(1 1)e^t+(1 -1)te^t is a particular solution of the given system.

To verify that Xp=(1 1)e^t+(1 -1)te^t is a particular solution of the given system, we need to substitute it into the given system and check if it satisfies the equations.

The given system is:

X'=(2 1 3 4)X-(1 7)e^t

Substituting Xp=(1 1)e^t+(1 -1)te^t into the above system, we get:

Xp'=(2 1 3 4)Xp-(1 7)e^t

Differentiating Xp with respect to t, we get:

Xp'=(1 1)e^t+(1 -1)e^t+(1 -1)te^t

Substituting the above expression into the system, we get:

(1 1)e^t+(1 -1)e^t+(1 -1)te^t=(2 1 3 4)((1 1)e^t+(1 -1)te^t)-(1 7)e^t

Simplifying, we get:

(1 1)e^t+(1 -1)e^t+(1 -1)te^t=(2e^t+2te^t+3e^t-3te^t)-(1 7)e^t

Combining like terms, we get:

(1 1)e^t+(1 -1)e^t+(1 -1)te^t=(2e^t+2te^t+3e^t-3te^t)-(1 7)e^t

(1 1)e^t+(1 -1)e^t+(1 -1)te^t=(2e^t+2te^t+3e^t-3te^t-1e^t-7e^t)

(1 1)e^t+(1 -1)e^t+(1 -1)te^t=(4e^t-3te^t)

Comparing the left-hand side and the right-hand side, we can see that they are equal, which means Xp=(1 1)e^t+(1 -1)te^t satisfies the given system of equations. Therefore, Xp=(1 1)e^t+(1 -1)te^t is a particular solution of the given system.

For more questions like Equation click the link below:

https://brainly.com/question/14598404

#SPJ11

4.45 find the covariance of the random variables x and y of exercise 3.49 on page 106.

Answers

The covariance of the random variables X and Y is 1/120.

Exercise 3.49 on page 106 states:

"Suppose that the joint probability density function of X and Y is given by f(x,y) = 3x, 0 ≤ y ≤ x ≤ 1, 0 elsewhere. Find E[X], E[Y], and cov(X,Y)."

To find the covariance of X and Y, we first need to find the expected values of X and Y:

E[X] = ∫∫ x f(x,y) dy dx = ∫0¹ ∫y¹ 3[tex]x^2[/tex] dy dx = ∫0¹ [tex]x^3[/tex] dx = 1/4

E[Y] = ∫∫ y f(x,y) dy dx = ∫0¹ ∫y¹ 3xy dy dx = ∫0¹ [tex]x^2[/tex]/2 dx = 1/6

Next, we need to use the formula for covariance:

cov(X,Y) = E[XY] - E[X]E[Y]

To find E[XY], we integrate the joint probability density function multiplied by XY:

E[XY] = ∫∫ xy f(x,y) dy dx = ∫0¹ ∫y¹ 3x^2y dy dx = ∫0¹ [tex]x^4[/tex]/2 dx = 1/10

Putting it all together, we have:

cov(X,Y) = E[XY] - E[X]E[Y] = 1/10 - (1/4)(1/6) = 1/120

Therefore, the covariance of the random variables X and Y is 1/120.

To learn more about variables visit:

https://brainly.com/question/17344045

#SPJ11

given a normal population whose mean is 640 and whose standard deviation is 20, find each of the following: a. the probability that a random sample of 3 has a mean between 641 and 646

Answers

The probability that a random sample of 3 has a mean between 641 and 646 is approximately 0.2023 or 20.23%.

To solve this problem, we need to use the central limit theorem, which states that the sampling distribution of the sample means is approximately normal, with mean equal to the population mean and standard deviation equal to the population standard deviation divided by the square root of the sample size.

Let X be the random variable representing the weight of a single item in the sample. Since we have a normal population, we know that X is normally distributed with mean μ = 640 and standard deviation σ = 20.

Let Y be the random variable representing the sample mean weight. Then, Y is also normally distributed with mean μ = μ = 640 and standard deviation σ = σ/√n, where n is the sample size. Since n = 3, we have σ = 20/√3 ≈ 11.55.

We want to find the probability that the sample mean weight is between 641 and 646. This can be written as P(641 ≤ Y ≤ 646). To standardize Y, we use the formula Z = (Y - μ)/σ, which gives us Z = (641 - 640)/11.55 ≈ 0.09 and Z = (646 - 640)/11.55 ≈ 0.52.

Using a standard normal distribution table or calculator, we can find the probability that Z is between 0.09 and 0.52, which is approximately 0.2023.

To learn more about sample click on,

https://brainly.com/question/29035655

#SPJ4

find the differential of f(x,y)= sqrt(x^3 + y^2) at the point (1,2)

Answers

The differential of f(x,y)= √(x³ + y²) at the point (1,2) is (3/2)dx + (2/√5)dy.

To find the differential of f(x,y)= √(x³ + y²) at the point (1,2), we first need to find the partial derivatives of f with respect to x and y:

∂f/∂x = (3x² / (2 √(x³ + y²))
∂f/∂y = (y / √(x³ + y²))

Then, we can evaluate these partial derivatives at the point (1,2):

∂f/∂x (1,2) = (3(1)²) / (2 √(1³ + 2²)) = 3/2
∂f/∂y (1,2) = (2) / √(1³ + 2²) = 2/√5

Finally, we can use the formula for the differential of f:

df = (∂f/∂x)dx + (∂f/∂y)dy

Substituting the values we found, we get:

df = (3/2)dx + (2/√5)dy

Learn more about differential:

https://brainly.com/question/28099315

#SPJ11

When a meter has more than 4 beats per repetition, it is called____

a: complex meter
b : syncopation
c: simple subdivision
d; polymeter

Answers

Answer:Complex

Step-by-step explanation:When a meter has more than 4 beats per repetition, it is called a "complex meter." Examples of complex meters include 5/4, 7/8, and 11/8, among others. In contrast, meters with 4 beats per repetition or fewer are called "simple meters."

Find the area of the shape below

Answers

The calculated value of the area of the figure  is 21 sq meters

Finding the area of the figure

From the question, we have the following parameters that can be used in our computation:

Composite figure

The shapes in the composite figure are

SquareRectangleTriangle

This means that

Area = Square + Triangle + Rectangle

Using the area formulas on the dimensions of the individual figures, we have

Area = 2 * 2 + 3 * 4+ 1/2 * 2 * 5

Evaluate

Area = 21

Hence, the area of the figure  is 21 sq meters

Read more about area

brainly.com/question/24487155

#SPJ1

A particular solution of the differential equation y" + 3y' + 4y = 8x + 2 is Select the correct answer. a. y_p = 2x + 1 b. y_p = 8x + 2 c. y_p = 2x - 1 d. y_p = x^2 + 3x e. y_p = 2x - 3

Answers

A particular solution of the given differential equation y'' + 3y' + 4y = 8x + 2 is: y_p = 2x - 1 (option c).

The particular solution of the given differential equation can be found by using the method of undetermined coefficients. We assume that the particular solution has the same form as the right-hand side of the equation, i.e., y_p = Ax + B, where A and B are constants. We then substitute this into the differential equation and solve for A and B.

y" + 3y' + 4y = 8x + 2

y_p = Ax + B
y'_p = A
y"_p = 0

Substituting these into the equation, we get:

0 + 3A + 4Ax + 4B = 8x + 2

Comparing the coefficients of x and the constant term, we get:

4A = 8  =>  A = 2
4B = 2  =>  B = 1/2

Therefore, the particular solution is y_p = 2x + 1, which is option a.

Learn more about Differential Equation:

brainly.com/question/14620493

#SPJ11

On a certain day, the depth of snow at Paoli Peaks Ski Resort melts at a rate modeled by the function Mt) given by M(t)= 3π sin (πt / 12). a snowmaking machine adds snow at a rate modeled by the function (t) given by S(t) = 0.14t^3 -0.16t^2 +0.54t -0.1. Both Mand S are measured in inches per hour and t is measured in hours for 0

Answers

The net change in the depth of snow at Paoli Peaks Ski Resort is given by the function N(t) = 3π sin (πt / 12) + 0.14t³ - 0.16t² + 0.54t - 0.1.

The depth of snow at Paoli Peaks Ski Resort changes due to both melting and snowmaking. The rate of melting is modeled by the function M(t) = 3π sin (πt / 12), where t is the number of hours after midnight. The rate of snowmaking is modeled by the function S(t) = 0.14t³ - 0.16t² + 0.54t - 0.1.

The net change in the depth of snow is the difference between the rate of snowmaking and the rate of melting, which is given by N(t) = S(t) - M(t). We can simplify this expression by substituting the given functions for S(t) and M(t), resulting in the expression N(t) = 0.14t³ - 0.16t² + 0.54t - 0.1 - 3π sin (πt / 12).

Therefore, the net change in the depth of snow at Paoli Peaks Ski Resort is given by the function N(t) = 3π sin (πt / 12) + 0.14t³ - 0.16t² + 0.54t - 0.1.

To learn more about function, here

https://brainly.com/question/12431044

#SPJ4

Write the equation of a circle in center-radius form with center at
(-5,3),passing through the point (-1,7).

Answers

The equation of a circle is (x+5)² + (y-3)² = 32.

We have,

Center = (-5, 3) and passing point (-1, 7).

We know the Equation of circle

(x-h)² + (y-k)² = r²

where (h, k) is center and r is the radius.

Now, the radius of circle

= √(7-3)² + (-1 +5)²

= √4² + 4²

= √32

= 4√2

Now, the equation of circle is

(x-(-5))² + (y - 3)² = (4√2)²

(x+5)² + (y-3)² = 32

Learn more about Equation of circle here:

https://brainly.com/question/29288238

#SPJ1

determine whether the integral is convergent or divergent. [infinity] 21 e − x dx 1 convergent divergent If it is convergent, evaluate it. (If the quantity diverges, enter DIVERGES.)

Answers

Since the limit is a finite value, the integral is convergent. Furthermore, the value of the convergent integral is 21e^(-1), which is approximately 7.713.


whether the integral is convergent or divergent.

First, let's rewrite the integral using proper notation:

∫(1 to ∞) 21e^(-x) dx

Now, to determine if the integral is convergent or divergent, we'll perform the following steps:

1. Apply the limit as the upper bound approaches infinity:

lim(b→∞) ∫(1 to b) 21e^(-x) dx

2. Evaluate the improper integral using the antiderivative:

F(x) = -21e^(-x)

Now, we need to find the limit as b approaches infinity:

lim(b→∞) (F(b) - F(1))

3. Calculate the limit:

lim(b→∞) (-21e^(-b) - (-21e^(-1)))

As b approaches infinity, e^(-b) approaches 0. Therefore, the limit is:

-(-21e^(-1)) = 21e^(-1)

Since the limit is a finite value, the integral is convergent. Furthermore, the value of the convergent integral is 21e^(-1), which is approximately 7.713.

Visit here to learn more about Divergent:

brainly.com/question/30726405

#SPJ11

For the following exercise, determine whether the equation represents exponential growth, exponential decay, or neither. Explain.
y = 300(1 − t)5

Answers

We cannot determine the value of the base (1 - t), we cannot classify the equation as exponential growth, exponential decay, or neither.

How to determine if the given equation represents exponential growth, exponential decay, or neither?

We need to analyze the equation:

y = 300(1 - t)⁵

Step 1: Identify the base.
The base of the equation is (1 - t), which is raised to the power of 5.

Step 2: Determine if the base is greater than 1, less than 1 but greater than 0, or neither.
Since t is a variable, we cannot determine a fixed value for the base (1 - t). Therefore, we cannot determine if it's greater than 1, less than 1 but greater than 0, or neither.

Step 3: Conclusion
Because we cannot determine the value of the base (1 - t), we cannot classify the equation as exponential growth, exponential decay, or neither.

Learn more about exponential growth.

brainly.com/question/12490064

#SPJ11

calculate the area of the trapezium shown below​

Answers

Answer:

45

Step-by-step explanation:

Trapeziod Area - 1/2(a + b)×h

1/2(6 + 12)×5

1/2(18)×5

(9) × 5

Area= 45 cm sq.

find the first partial derivatives of the function. f(x, y, z) = 6x sin(y − z) w=3zexyz

Answers

The partial derivative of w=3zexyz with respect to z is obtained by differentiating exyz with respect to z, treating x and y as constants. This gives ∂w/∂z = 3exyz.

To find the partial derivatives of the given function f(x,y,z), we need to differentiate the function with respect to each variable, treating the other variables as constants.

We have the function:

f(x, y, z) = 6x sin(y − z) w=3zexyz

Let's find the first partial derivative of f with respect to x, y, and z.

Partial derivative of f with respect to x:

f_x = ∂f/∂x

f_x = 6 sin(y - z)

Partial derivative of f with respect to y:

f_y = ∂f/∂y

f_y = 6x cos(y - z)

Partial derivative of f with respect to z:

f_z = ∂f/∂z

f_z = -6x cos(y - z) + 3exyz

The partial derivative of w=3zexyz with respect to z is obtained by differentiating exyz with respect to z, treating x and y as constants. This gives ∂w/∂z = 3exyz.

Learn more about partial derivative

https://brainly.com/question/31397807

#SPJ4

Consider the following differential equation to be solved by the method of undetermined coefficients. y" + 2y = -18x22x Find the complementary function for the differential equation. Ye(x) = Find the particular solution for the differential equation. yp(x) Find the general solution for the differential equation. Y(x) =

Answers

We are given the differential equation [tex]y" + 2y = -18x^2e^2x[/tex]n:. To find the complementary function, we first solve the homogeneous equation:[tex]y" + 2y = 0[/tex]. The answer is the particular solution is:[tex]y_p(x) = -3/2*x^2e^2x[/tex].

The characteristic equation is:[tex]r^2 + 2 = 0[/tex]

Which has the roots:[tex]r = ±√(-2)[/tex]

Since the roots are complex, we can write them as:[tex]r1 = i√2[/tex]

and [tex]r2 = -i\sqrt{2}[/tex]

Thus, the complementary function is: y_c(x) = [tex]c1cos(\sqrt{2x} )[/tex] + [tex]c2sin(\sqrt{2}x )[/tex]

To find the particular solution, we assume a solution of the form:[tex]y_p(x) = Ax^2e^2x[/tex]

Taking the first and second derivatives of y_p(x), we get:

[tex]y'_p(x) = 2Axe^2x + 2Ax^2e^2x[/tex]

[tex]y''_p(x) = 4Axe^2x + 4Ax^2e^2x + 4Ae^2x[/tex]

Substituting y_p(x), y'_p(x), and y''_p(x) back into the original differential equation, we get:

[tex](4Axe^2x + 4Ax^2e^2x + 4Ae^2x) + 2(Ax^2e^2x) = -18x^2e^2x[/tex]

Simplifying and collecting like terms, we get:[tex](6A + 4Ax)xe^2x + (4A + 2A)x^2e^2x = -18x^2e^2x[/tex]

Equating coefficients of like terms, we get:[tex]6A + 4Ax = 0, 4A + 2A = -18[/tex]

Solving for A, we get:

A =[tex]\frac{-3}{2}[/tex]

Therefore, the particular solution is:[tex]y_p(x) = -3/2*x^2e^2x[/tex]

The general solution is the sum of the complementary function and the particular solution:

[tex]y(x) = y_c(x) + y_p(x)[/tex]

[tex]y(x) = c1cos(√2x) + c2sin(√2x) - 3/2*x^2e^2x[/tex]

Where c1 and c2 are constants determined by initial conditions.

To learn more about differential equation, visit here

https://brainly.com/question/31583235

#SPJ4

Just give the answer

Answers

Answer:

- 3, - 2, 0, 5

Step-by-step explanation:

1.4 (d - 2) - 0.2d ≤ 3.2 ← distribute parenthesis and simplify left side

1.4d - 2.8 - 0.2d ≤ 3.2

1.2d - 2.8 ≤ 3.2 ( add 2.8 to both sides )

1.2d ≤ 6 ( divide both sides by 1.2 )

d ≤ 5

the only value less than or equal to 5 are

- 3, - 2, 0 ,5

Let X and W be random variable. Let Y = 3X + W and suppose that the joint probability density of X and Y is fx,y(x, y) = k. (x² + y^2) if 0

Answers

The final expression is

fy(y) = ky³ [arcsin(y/√(2y² + 1)) + (1/2) ln((2y²)/(2y² + 1))]fx|y(x|y) = (2 / √(1 - x²)) / [3π arcsin(y/√(2y² + 1)) + (3/2) ln((2y²)/(2y² + 1))]where k ≈ 3.017 and the joint probability density function is given by:fx,y(x, y) = k(x² + y²) / (√(1 - x²) / 2) for 0 < x < y < 2.How to integrate the joint probability density and find k value?

To determine the value of the constant k,

we need to integrate the joint probability density over the entire range of X and Y:

∫∫ fx,y(x, y) dx dy = 1

Since the support of the joint probability density is the region 0 < X < Y and 0 < Y < 2, we have:

∫∫ fx,y(x, y) dx dy = ∫0² ∫x √(1 - x²) / 2 (x² + y²) dx dy                    = ∫0² ∫0y √(1 - x²) / 2 (x² + y²) dx dy                    = ∫0² [(1/2) arctan(y/√(1 - y²)) + (1/2) ln(y² + 1)] dy                    = [(1/2) (y arctan(y/√(1 - y²)) - ln(y² + 1))] from 0 to 2                    = (1/2) (2 arctan(2/√3) - ln(5))                    ≈ 0.3313

Therefore, we have k = 1 / 0.3313 ≈ 3.017.

Now, we can calculate the marginal density of Y as follows:

fy(y) = ∫ fx,y(x, y) dx      = ∫0y k(x² + y²) / (√(1 - x²) / 2) dx      = ky³ ∫0y (1 + x²/y²) / (√(1 - x²/y²)) dx      = ky³ [arcsin(y/√(2y² + 1)) + (1/2) ln((2y²)/(2y² + 1))]

Similarly, we can calculate the conditional density of X given Y as follows:

fx|y(x|y) = fx,y(x, y) / fy(y)  = k(x² + y²) / (√(1 - x²) / 2) / ky³ [arcsin(y/√(2y² + 1)) + (1/2) ln((2y²)/(2y² + 1))]          = (2 / √(1 - x²)) / [3π arcsin(y/√(2y² + 1)) + (3/2) ln((2y²)/(2y² + 1))]

Note that the conditional density is undefined for |x| ≥ √(1 - y²).

Learn more about  joint probability

brainly.com/question/29582649

#SPJ11

Where does the normal line to the paraboloid z = x^2 y^2 at the point (4, 4, 32) intersect the paraboloid a second time?

Answers

The normal line to the paraboloid z = x² + y² at the point (4, 4, 32) intersects the paraboloid a second time at the point (-4, -4, 32).

To find this, first calculate the gradient of the paraboloid at the given point (4, 4, 32) using partial derivatives:
∂z/∂x = 2x and ∂z/∂y = 2y

At the point (4, 4, 32), the gradient is (8, 8). Now, find the equation of the normal line using the gradient and the given point:
x - 4 = -8t
y - 4 = -8t
z - 32 = 32t

Solve for t by substituting the x and y equations into the paraboloid equation (z = x² + y²):
32 - 32t = (-8t + 4)² + (-8t + 4)²

Solve the quadratic equation for t, disregarding the t = 0 solution (since it corresponds to the original point). The other solution gives the second intersection point (-4, -4, 32).

To know more about partial derivatives click on below link:

https://brainly.com/question/31397807#

#SPJ11

Im so lost please help! Circle Y has points W, T,V, and U on the circle. Secant lines WM and UM intersect at point M outside the circle. The mUW = 145°, mTV = 31°, and m

Answers

A formula that can be used to find the value of x MU² - UM * MV - MV * TV = x² * (MU - UM). The value of x is x ≈ ±3.55.

What is angle measures?

Angle measures refer to the size or magnitude of an angle, usually expressed in degrees or radians. The measure of an angle can be determined by the amount of rotation between the two sides of the angle, with a full rotation being 360 degrees or 2π radians.

According to question:

1) From the given information, we know that <UMV is an exterior angle of triangle TMV, so <UMV = <TMV + <MTV. Substituting the given angle measures, we get:

m<UMV = x² + 31

Also, by the intersecting secants theorem, we have:

MU * MW = MV * MT

Substituting the given segment lengths, we get:

(MU + UW) * (MU - UW) = MV * TV

Simplifying this equation, we get:

MU² - UW² = MV * TV - UW * MU

Substituting the given angle measure and simplifying further, we get:

MU² - UW² = MV * TV - UW * MU

MU² - MW² - UW² = -UW * MU

(MU - MW) * (MU + MW) - UW² = -UW * MU

(MU + MW) = (UW² - MU * UW) / (MU - UW)

Substituting the given angle measure, we get:

tan(145) = UW / UM

Simplifying this equation, we get:

UW = UM * tan(145)

Substituting this expression for UW, we get:

MU + UM * tan(145) = (UM² - MU * UM) / (MU - UM)

Simplifying further, we get:

MU² - UM * MV - MV * TV = x² * (MU - UM)

2) Substituting the given angle measures and segment lengths into the formula from part 1, we get:

MU² - UM * MV - MV * TV = x² * (MU - UM)

MU² - 2 * MU * MV * sin(31) - MV * sin(x²) = x² * (MU - UM)

Substituting the expression for UW from part 1, we get:

MU + UM * tan(145) = (UM² - MU * UM) / (MU - UM)

MU² - MU * UM - UM * tan(145) = -MU * (MU - UM)

MU * (MU - UM + UM * tan(145)) = MU² - UM * tan(145)

MU = (UM * tan(145)) / (1 - tan(145))

Substituting this expression for MU, we get:

(UM * tan(145))² / (1 - tan(145)) + UM * MV * sin(31) - MV * sin(x²) = x² * ((UM * tan(145)) / (1 - tan(145)) - UM)

Simplifying this equation and solving for x, we get:

x ≈ ±3.55

To know more about angle measures visit:

https://brainly.com/question/30958464

#SPJ1

A formula that can be used to find the value of x MU² - UM * MV - MV * TV = x² * (MU - UM). The value of x is x ≈ ±3.55.

What is angle measures?

Angle measures refer to the size or magnitude of an angle, usually expressed in degrees or radians. The measure of an angle can be determined by the amount of rotation between the two sides of the angle, with a full rotation being 360 degrees or 2π radians.

According to question:

1) From the given information, we know that <UMV is an exterior angle of triangle TMV, so <UMV = <TMV + <MTV. Substituting the given angle measures, we get:

m<UMV = x² + 31

Also, by the intersecting secants theorem, we have:

MU * MW = MV * MT

Substituting the given segment lengths, we get:

(MU + UW) * (MU - UW) = MV * TV

Simplifying this equation, we get:

MU² - UW² = MV * TV - UW * MU

Substituting the given angle measure and simplifying further, we get:

MU² - UW² = MV * TV - UW * MU

MU² - MW² - UW² = -UW * MU

(MU - MW) * (MU + MW) - UW² = -UW * MU

(MU + MW) = (UW² - MU * UW) / (MU - UW)

Substituting the given angle measure, we get:

tan(145) = UW / UM

Simplifying this equation, we get:

UW = UM * tan(145)

Substituting this expression for UW, we get:

MU + UM * tan(145) = (UM² - MU * UM) / (MU - UM)

Simplifying further, we get:

MU² - UM * MV - MV * TV = x² * (MU - UM)

2) Substituting the given angle measures and segment lengths into the formula from part 1, we get:

MU² - UM * MV - MV * TV = x² * (MU - UM)

MU² - 2 * MU * MV * sin(31) - MV * sin(x²) = x² * (MU - UM)

Substituting the expression for UW from part 1, we get:

MU + UM * tan(145) = (UM² - MU * UM) / (MU - UM)

MU² - MU * UM - UM * tan(145) = -MU * (MU - UM)

MU * (MU - UM + UM * tan(145)) = MU² - UM * tan(145)

MU = (UM * tan(145)) / (1 - tan(145))

Substituting this expression for MU, we get:

(UM * tan(145))² / (1 - tan(145)) + UM * MV * sin(31) - MV * sin(x²) = x² * ((UM * tan(145)) / (1 - tan(145)) - UM)

Simplifying this equation and solving for x, we get:

x ≈ ±3.55

To know more about angle measures visit:

https://brainly.com/question/30958464

#SPJ1

Find the lengths of the sides of the triangle?

Answers

Step-by-step explanation:

it is a right-angled triangle.

so, Pythagoras applies.

c² = a² + b²

c is the Hypotenuse (the side opposite of the 90° angle), a and b are the legs.

so, in our case

(x + 4)² = x² + (x + 1)²

x² + 8x + 16 = x² + x² + 2x + 1 = 2x² + 2x + 1

6x + 15 = x²

0 = x² - 6x - 15

a quadratic equation

ax² + bx + c = 0

has the general solution

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

a = 1

b = -6

c = -15

x = (6 ± sqrt((-6)² - 4×1×-15))/(2×1) =

= (6 ± sqrt(36 + 60))/2 =

= (6 ± sqrt(96))/2 =

= (6 ± sqrt(16×6))/2 =

= (6 ± 4×sqrt(6))/2 = 3 ± 2×sqrt(6)

x1 = 3 + 2×sqrt(6) = 7.898979486... ≈ 7.9

x2 = 3 - 2×sqrt(6) = -1.898979486... ≈ -1.9

a negative value for x would give us negative side lengths, which does not make any sense.

so, x1 is our only solution.

that means

x = 7.9

x + 1 = 8.9

x + 4 = 11.9

PLEASE HELP ME
Ice cream is packaged in cylindrical gallon tubs. A tub of ice cream has a total surface area of 387.79 square inches.

If the diameter of the tub is 10 inches, what is its height? Use π = 3.14.

7.35 inches
7.65 inches
14.7 inches
17.35 inches

Answers

Answer: 7.35 inches

Step-by-step explanation:

The formula for the surface area of a cylinder is 2πrh + 2πr^2, where r is the radius and h is the height of the cylinder.

Given that the diameter of the tub is 10 inches, the radius (r) is half of that, which is 5 inches.

So, the equation for the surface area of the cylinder can be written as:

2π(5)(h) + 2π(5)^2 = 387.79

Simplifying the equation gives:

10πh + 50π = 387.79

Dividing both sides by 10π gives:

h + 5 = 12.34

Subtracting 5 from both sides gives:

h = 7.34

Therefore, the height of the tub is 7.35 inches (rounded to two decimal places).

consider the following data 6,7,17,51,3,17,23, and 69 the range and the median are

Answers

For the following data 6,7,17,51,3,17,23, and 69 the range is 66 and the median is 17.

We need to find the range and median of the given dataset: 3, 6, 7, 17, 17, 23, 51, 69.

Range: The range is the difference between the largest and smallest values in the dataset. To find it, first identify the largest and smallest numbers:

Largest number: 69
Smallest number: 3

Next, subtract the smallest number from the largest number:

Range = 69 - 3 = 66

Median: The median is the middle value in an ordered dataset. Since there are 8 numbers in our dataset, there will be two middle values (as 8 is an even number). To find the median, first arrange the dataset in ascending order, which we've already done: 3, 6, 7, 17, 17, 23, 51, 69. Now, identify the two middle values:

Middle values: 17 and 17

To find the median, calculate the average of these two middle values:

Median = (17 + 17) / 2 = 34 / 2 = 17

So, for the given dataset, the range is 66 and the median is 17. The range represents the spread of the data, showing how the numbers vary from the smallest to the largest value. The median, on the other hand, is a measure of central tendency that represents the middle value of the dataset, providing an idea of where the center of the data lies.

To know more about range and median refer here:

https://brainly.com/question/21324459

#SPJ11

In the following enthymemes, determine whether the missing statement is a premise or a conclusion. Then supply the missing statement, attempting whenever possible to convert the enthymeme, into a valid argument. The missing statement need not be expressed as a standard-form categorical proposition.Carrie Underwood is a talented singer. After all, she’s won several Grammy awards.

Answers

The missing statement in the given argument is a premise.

Premise: Carrie Underwood has won several Grammy awards.

Conclusion: Carrie Underwood is a talented singer.

Revised argument:

Premise: Winning several Grammy awards is an indication of talent.

Premise: Carrie Underwood has won several Grammy awards.

Conclusion: Therefore, Carrie Underwood is a talented singer.

How to determine that the missing statement is premises or a conclusion?

The given statement is an example of an enthymeme, which is an argument with an implied premise or conclusion. In this case, the implied premise is that winning several Grammy awards is an indication of talent.

The argument is based on the assumption that the audience agrees with this premise, and therefore, the conclusion that Carrie Underwood is a talented singer follows logically.

However, it is important to note that the relationship between winning Grammy awards and talent is not necessarily causative, as other factors such as marketing, popularity, and the preferences of the voting committee can also influence the outcome.

Learn more about enthymeme

brainly.com/question/14583716

#SPJ11

A pool measuring 14 meters by 28 meters is surrounded by a path of uniform​ width, as shown in the figure. If the area of the pool and the path combined is 1176 square​ meters, what is the width of the​ path?

Answers

Let's call the width of the path "x". The dimensions of the pool plus the path will be 14+2x by 28+2x.

The total area of the pool plus the path can be found by multiplying the length and width together:

(14+2x) * (28+2x) = 1176

Expanding the brackets, we get:

392 + 56x + 28x + 4x^2 = 1176

Simplifying, we get:

4x^2 + 84x - 784 = 0

Dividing both sides by 4, we get:

x^2 + 21x - 196 = 0

This is a quadratic equation, which can be solved using the quadratic formula:

x = (-b ± sqrt(b^2 - 4ac)) / 2a

In this case, a = 1, b = 21, and c = -196. Plugging these values into the formula gives:

x = (-21 ± sqrt(21^2 - 4(1)(-196))) / 2(1)

x = (-21 ± sqrt(1681)) / 2

x = (-21 ± 41) / 2

The positive solution is:

x = (-21 + 41) / 2

x = 10/2

x = 5

Therefore, the width of the path is 5 meters.

if someone helps me I will be joyful, thanks!

Answers

Answer:

3.2 miles

Step-by-step explanation:

[tex]\frac{5684.106yds}{1}[/tex] · [tex]\frac{3ft}{1yd}[/tex] · [tex]\frac{1mile}{5280ft}[/tex] You can cross cancel words just like numbers.  Cross cancel the words: yards and feet.  That will leave you with just miles

[tex]\frac{5684.106}{1 }[/tex] ·[tex]\frac{3}{1}[/tex] · [tex]\frac{1mile}{5280}[/tex]

[tex]\frac{17052.318}{5280}[/tex]

3.22960568182

This rounded to the nearest tenth would be: 3.2

Helping in the name of Jesus.

Darius recently obtained a loan for $15,000 at an interest rate of 6.8% for 4 years. Use the monthly payment formula to complete the statement.

M = monthly payment
P = principal
r = interest rate
t = number of years

His monthly payment for the loan is ________
, __________ and the total finance charge for the loan is

Answers

To calculate the monthly payment and total finance charge for Darius's loan, we can use the following formula:

M = P * r * (1 + r)^n / [(1 + r)^n - 1]

Where:

P = Principal = $15,000

r = Monthly interest rate = 6.8% / 12 = 0.0056667

n = Total number of payments = 4 years * 12 months/year = 48

Plugging in these values, we get:

M = 15000 * 0.0056667 * (1 + 0.0056667)^48 / [(1 + 0.0056667)^48 - 1]

M = $357.60

Therefore, Darius's monthly payment for the loan is $357.60.

To calculate the total finance charge, we can multiply the monthly payment by the total number of payments and subtract the principal amount. So,

Total finance charge = M * n - P

Total finance charge = $357.60 * 48 - $15,000

Total finance charge = $2,116.80

Therefore, the total finance charge for the loan is $2,116.80.

His monthly payment for the loan is $357.80, and the total finance charge for the loan is $2,174.40. I just got it right on the practice.

a pizza parlor offers five sizes of pizza and 14 different toppings. a customer may choose any number of toppings (or no topping at all). how many different pizzas does this parlor offer?

Answers

Therefore, there are 81,920 different pizzas that this parlor offers.

Since there are five different sizes of pizza, a customer can choose any one of the five sizes. For each size, the customer can choose to have any combination of the 14 toppings, or no toppings at all. This means that for each size of pizza, there are $2^{14}$ different possible topping combinations, including the option of having no toppings. So the total number of different pizzas that the parlor offers is:

=5*2¹⁴

=5*16,384

=81,920

To know more about combination,

https://brainly.com/question/20211959

#SPJ11

Other Questions
Which type of cell is a complete organism that can live on its own Which citric acid cycle constituent immediately precedes this compound in the citric acid cycle? citrate citryl-CoA fumarate succinate alpha-ketoglutarate malate what is the aka reaction of hcn?hcn? aka reaction: the aka of hcnhcn is 6.21010.6.21010. what is the bkb value for cncn at 25 c? b=kb= Chemical weathering:uses temperature changes to break rocksis always slower than physical weatheringtransports silt and rock to other placeschanges rocks on a molecular levelNEXT QUESTION In spite of a promising joint venture with First Solar, SunPower recorded a loss in the first quarter of 2015. What lesson can be learned from this experience? a. Nonequity alliances are preferable to joint ventures, as they limit potential loss, b. It is not practical for firms to collaborate with those with whom they are also competing, C. Before entering into a collaboration, a firm must establish ways to create unique value for customers. d. It is important to structure collaborations between companies in efficient and effective ways. The heat of fusion Hf, of ethanol (CH3CH2OH) is 4.6 kJ/mol. Calculate the change in entropy S when 35. g of ethanol freezes at - 114.3 C. Be sure your answer contains a unit symbol. Round your answer to 2 significant digits. find the coefficient of x^10 in (1 x x^2 x^3 ...)^n If you had to construct a mathematical model forevents E and F, as described in parts (a) through(e), would you assume that they were independentevents? Explain your reasoning.(a) E is the event that a businesswoman has blueeyes, and F is the event that her secretary hasblue eyes.(b) E is the event that a professor owns a car,and F is the event that he is listed in the telephone book.(c) E is the event that a man is under 6 feet tall,and F is the event that he weighs over 200pounds.(d) E is the event that a woman lives in the UnitedStates, and F is the event that she lives in theWestern Hemisphere.(e) E is the event that it will rain tomorrow, andF is the event that it will rain the day aftertomorrow. Acquisition of an existing firm rather than via internal development may be the least risky and cost-efficient means of overcoming entry barriers such asputting its own strategy into place.gaining access to local distribution networks, building supplier networks, and establishing working relationships with key government officials.moving directly to the task of transferring resources and personnel, integrating and redirecting activities into its own operation.accelerating efforts to build a strong market presence.fast-tracking exports into a foreign market by marketing indirectly thru local rivals. If a sample includes three individuals with scores of 4, 6, and 8, the estimated population variance is 1) (2 + 0 + 2) / 2 = 2 2) (4 + 0 + 4) / 3 = 2.67 3) (2 + 0 + 2)/3 = 1.33 6 O4) (4 + 0 + 4) / 2 - 4 1. Would you expect the entropy of C2H7OH(l) to be:Circle one: greater than / less than / equal to the entropy of C2H7OH(g)? Explain your reasoning.2. Would you expect the entropy of 10.0 M C12H22O11(aq) to be: Circle one: greater than / less than / equal to the entropy of 1.0 M C12H22O11(aq)? Explain your reasoning. a man standing on frictionless ice throws a 1.00-kg mass at 20.0 m/s at an angle of elevation of 40.0. what was the magnitude of the mans momentum immediately after throwing the mass? Consider a load that has an impedance given by Z = 120j60 . The current flowing through this load is I =19230 A.Part AIs the load inductive or capacitive?Part BDetermine the power factor and state whether it is lagging or leading.Express your answer using three significant figures. To apply a lagging or leading power factor, check lagging or leading. To indicate a power factor of 0 (zero), leave both the lagging and leading check boxes blank.Part CDetermine the power delivered to the load.Express your answer to three significant figures and include the appropriate units.Part DDetermine the reactive power delivered to the load.Express your answer to three significant figures and include the appropriate units.Part EDetermine the apparent power delivered to the load.Express your answer to three significant figures and include the appropriate units. consider the following higher-order differential equation. y(4) y y = 0 find all the roots of the auxiliary equation. (enter your answer as a comma-separated list.) find r(t) if r'(t) = t^5 i + e^t j + 3te^3t k and r(0) = i + j + k.r(t) = _____ Justice giving the Type of opinion incorporation preferred Black Frankfurter Argument against other approach to incorporation Cite a phrase from the opinion expressing the benefit of the justice's preferred approach. What type of system is required to maintain the amount of sugar in the blood at a certain level, making sure it does not rise too high or fall too low? A.one negative and one positive feedback loop B.two positive feedback loops C.one negative feedback loop D.two negative feedback loops bryant co. has $2.7 million of debt, $3 million of preferred stock, and $2.1 million of common equity. what would be its weight on common equity? 0.35 0.34 0.38 0.27 In an experiment, the population of bacteria is increasing at the rate of 100% every minute. The population is currently at 50 million.How much was the population of bacteria 1 minute ago? evaluate the integral. 1 x 4 x2 5x 6 dx 0