a blueprint for a house has a scale of 1:25 a wall in the blueprint is 3 inches what is the length of the actual wall in feet

The observed value of student's t statistic rounded to the nearest hundredth is 1.72.

The stated data is-

Thus,

Degree of freedom = n -1

Df = 22-1

Df = 21

As, the significance level is 5% then test is right tailed.

So,

Alpha value = 0.05

Now,

For alpha value = 0.05 and degree of freedom = 21.

t- critical value = 1.721 (from the t-statiscts table).

Thus, the observed value of student's t statistic rounded to the nearest hundredth is 1.72.

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The number of remaining green and yellow pins is 14 pins and 21 pins.

A proportion is a mathematical calculation that compares two numbers. According to proportion, two sets of given numbers are said to be directly proportional to one another if they increase or decrease in the same ratio.

The fraction of green pins present in the bag is 3/7. Then, the fraction of yellow pins present in the bag is 4/7.

When Yaqub picks up the green pin and gives it to his sister, the new fraction of green and yellow pins are 2/5 and 3/5.

Let x be the number of pins remaining in the bag after 1 pin less. This is written as,

[tex]\begin{aligned}\frac{3}{7}x-1 &= \frac{2}{5}x\\\frac{3}{7}x-\frac{2}{5}x&=1\\x&=35\end{aligned}[/tex]

There are about 35 pins remaining in the bag.

Then, the number of green pins remaining is (2/5) × 35 = 14 pins.

The number of yellow pins remaining is (3/5) × 35 = 21 pins.

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True. the interpretation of the slope is different in a multiple linear regression model as compared to a simple linear regression model.

The slope and intercept of a line reveal the steepness of the line and the location in which it intersects an axis. The slope and intercept of the logistic relationship of the two variables can be utilized to get the average change rate. The ratio of a change in the variable y to the rise in the x component is known as the the line's slope.

Y = a + bX, where X seems to be the mediating variable and Y is the response variable, is the equation of a linear regression line. A is the intersection (the result of y for x = 0), and b is the line's slope.

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List all of the integer values that could take that would satisfy the inequality shown on the number line below. ​

(-2 , 1.5)

The correct option for given situation is,

⇒ To demonstrate your professionalism, you should arrive for the appointment ''Right on time''.

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

You have a meeting with a potential client for your printing business.

And, To demonstrate your professionalism, you should arrive for the appointment.

Now, We know that;

The rule of business is,

To demonstrate your professionalism, you should arrive for the appointment on the right time.

Therefore, The correct option for given situation is,

⇒ Right on time

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The rate is the water level decreasing when the radius of the water's surface is r = 2cm is 0.08 cm/sec or dh/dt = - 0.08 cm/sec.

We have given that,

Water is dripping from an inverted cone.

height , h = 12 cm

diameter , d = 12 cm

so, radius, r = 6 cm

rate , dV/dt = - 1 cm³/sec

At any point, the portion of the cone that is filled will have the ratio of radius/height = 6/12 = 1/2. Put another way, h = 2r.

we have to calculate the rate is the water level decreasing , dh/dt when radius of the water's surface is r = 2 cm .

Volume of cone , V = 1/3 π (r)²h = 1/3π (h/2)²h

plugging all known values,

V = 1/3 ( h³/4)π

differentiating with respect to h we get,

dV/dh = 1/3(3h²)π/4 , h = 12

= 1/12(3× 4r²)π ( from r = 2 cm)

= 4π cm²

but we have required, dh/dt = dV/dt × dh/dV

= - 1 cm³/sec × 1/4π cm²

= - 1/4π cm/sec

= - 0.0792 ~ 0.08 cm/sec

Hence, the required value is - 0.08 cm/sec.

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Complete question:

Water is dripping from an inverted cone with a diameter of 12 cm and a height of 12 cm at a rate of 1 cm3 /sec. At what rate is the water level decreasing when the radius of the water's surface is r = 2 cm?"

the number of fih at 9:00 A.M. (794), which yields 209 fih, the number of fih left at 5:00 P.M. is 585 fih

Subtract the number of fih at 9:00 A.M. (794) from the number of fih left at 5:00 P.M. (209).

794 - 209 = 585

Therefore, the dolphin ate 585 fih.

To estimate how many fih the dolphin ate, we must first subtract the number of fih at 9:00 A.M. (794) from the number of fih left at 5:00 P.M. (209). This gives us 585 fih, which is the estimated number of fih that the dolphin ate. This calculation can be verified by subtracting the number of fih the dolphin ate (585) from the number of fih at 9:00 A.M. (794), which yields 209 fih, the number of fih left at 5:00 P.M.

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Answer:100x * 65

Step-by-step explanation:

distribute the 50 into 20 and 1.3 then set it up

y=x/2 is equation for a tangent to the graph of y=arcsin(x/2) at the origin.

In order to fing the equation of tangent of any graph we need 2 things

 i . A point on the graph

 ii . Slope a line on that point

Given y=[tex]sin^-^1(\frac{x}{2} )[/tex]

put x=0

y = [tex]sin^-^1[/tex] (0)

=> y =0

so the graph passes through point (0,0)

now we have to find slope of the graph

slope = [tex]y^'[/tex] = [tex]\frac{d(y)}{dx}[/tex]

=> [tex]\frac{1}{\sqrt{4-x^2} }[/tex]

slope of line at point (0,0) is 1/2

so equation of line is y-0=1/2(x-0)

so the equation of tangent to the given graph is y=x/2

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Answer: Y=-2x-5

Step-by-step explanation:

Points: (-4, 3) & (-3, 1)

To find the slope, we use m= (y₂-y₁)/(x₂-x₁)

With these points, m= (1-3)/(-3--4)

This gives us m= -2/1, or -2

Slope-intercept form is y=mx+b

We can plug in the slope now, so y=-2x+b

B is the y-intercept, which is -5, in this case

This gives us y=-2x-5

Answer:

B) If I do not make the team, then I do not get a uniform.

Step-by-step explanation:

The contrapositive of a conditional statement is formed by negating both the antecedent and the consequent of the statement and then swapping their order. In the case of the statement "If I do not get a uniform, then I do not make the team," the contrapositive is "If I do not make the team, then I do not get a uniform."

Answer:

1000

Step-by-step explanation:

you could write this as 5350 divided by x = 5.35

multiply both sides by x you get 5.35x = 5350

divide both by 5.35

x =1000

or you could just do 5350/5.35 which is 1000

therefore 5350 divided by 1000 would be 5.35

The number line to represent the given scenario is number line with close circle at point 12 and shaded to the right. The correct option is (D).

A number line is the pictorial representation of numbers on a graph. The reference point on the number line is known as origin and all the numbers right to the origin are taken as positive and those left to it are negative numbers.

The number of newspapers to be delivered is not less than 20.

Suppose the number of newspaper left at any time be x.

Then, the inequality for the given situation can be written as,

x ≥ 12

This implies all the whole numbers greater than and including 12 on the number line.

Hence, the solution can be represented as all numbers greater than and equal to 12.

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The percentage score for a 71 on the test is 27, and the winning score is 71.

The science of statistics focuses on creating and researching strategies for gathering, evaluating, interpreting, and reporting empirical data.

As per the given information in the question,

The given scores are:

5, 4, 66, 70, 71, 75, 77, 80, 84, 85, 87, 90, 93, 95, and 96.

A percentage is a number in a range of one to 100 that represents the percentage of a range that falls inside or above it.

Formula for calculating percentile rank on a test score of 71,

R₁₀₀ = [100(N <) + 1/2]/N

=100 × 4 + 1/2(1)/15

=400 + 0.5/15

=400.5/15

=26.7=27th

Now we need to find the score of victor who has 60th percentile.

60 = Score/15

Score = 71

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Answer:

48

Step-by-step explanation:

Let T be the number of texts sent on each plan.

The cost of Plan A can be represented as $9.25 + $0.06T.

The cost of Plan B can be represented as $2.50 + $0.20T.

We want to find the number of texts T at which the two plans cost the same amount. Therefore, we can set the two equations equal to each other and solve for T:

$9.25 + $0.06T = $2.50 + $0.20T

Subtracting $2.50 from both sides, we get:

$6.75 + $0.06T = $0.20T

Subtracting $0.06T from both sides, we get:

$6.75 = $0.14T

Dividing both sides by $0.14, we get:

T = 48.21

Therefore, the number of texts at which the two plans cost the same amount is approximately 48 texts. This means that if you send fewer than 48 texts per month, Plan A will be cheaper, and if you send more than 48 texts per month, Plan B will be cheaper.

Answer: -25y/216x

Step-by-step explanation: - 25y / 216x

Answer:

(-30x^2/y^2)^5

Step-by-step explanation:

First, we can simplify the exponent in the first term by using the property that (a^m)^n = a^(m⋅n). This property tells us that we can calculate the exponent of the first term by multiplying the exponent of the base by the exponent of the power, which gives us (-3)⋅(-3) = 9. This means that the first term can be rewritten as (2x ⋅ -3/y)^9.

Next, we can simplify the second term by calculating its exponent in the same way, which gives us (-2)⋅(2) = -4. This means that the second term can be rewritten as (-5x/y)^-4.

We can then combine the two terms by using the property that (a^m)⋅(b^n) = (a⋅b)^(m+n). This property tells us that we can calculate the exponent of the combined terms by adding the exponents of the individual terms, which gives us 9 + (-4) = 5. This means that the entire expression can be rewritten as (2x ⋅ -3/y)^9 ⋅ (-5x/y)^-4 = (2x⋅-3/y⋅-5x/y)^5.

Finally, we can simplify the base of the combined terms by multiplying the factors together, which gives us (2x⋅-3/y⋅-5x/y) = -30x^2/y^2. This means that the entire expression can be rewritten as (-30x^2/y^2)^5.

Answer:

19

Step-by-step explanation:

If a continuous random variable X is normally distributed with mean μ and variance σ², it is written as:

[tex]\boxed{X \sim\text{N}(\mu,\sigma^2)}[/tex]

Given:

Therefore, if the heights of men are normally distributed:

[tex]\boxed{X \sim\text{N} \left(69.0, 2.8^2 \right)}[/tex]

where X is height in inches.

Given:

Find the probability that the heights of men is between 64 and 78 inches by calculating P(64 ≤ X ≤ 78).

Calculator input for "normal cumulative distribution function (cdf)":

⇒ P(64 ≤ X ≤ 78) = 0.9622733869...

To calculate how many men who want to enlist in the U.S. Marine Corps would not expect to meet the height requirements from a group of 500, multiply 500 by 1 less than the probability found above:

⇒ 500 × [1 - P(64 ≤ X ≤ 78)]

⇒ 500 × [1 - 0.9622733869...]

⇒ 500 × 0.03772661307...

⇒ 18.86330654...

Therefore, we would expect for 19 men to not meet the height requirements.

The area of the square is bigger than the Area of the rectangle.

Suppose the sum of all the sides in a square is this: 4 x A and the same is true of a rectangle, too.

Then, first, the area of the square is A^2.

And next, assuming that we have this: 0 < X < A and that one side in the rectangle is this: (A - X)

we can say that the side next to (A - X) is this: (A + X) because the sum of all the four sides in the rectangle has to be this: (4 x A), which equals the sum of all the sides in the square.

So now, the area of the square is this: A^2, whereas the area of the rectangle is this: (A^2 - X^2), which equals this: (A + X)(A - X).

You know thus now, which of the two areas is bigger, and it’s the area of the square. And the difference between the two areas is this: X^2.

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The study revealed that 87% of movie customers spend an average of $6.39 or less on concessions.

To calculate the spending amount that corresponds to the top 87th percentile, we must first calculate the z-score. To do this, subtract the mean of $4.11 from the desired percentile of $6.39, resulting in a difference of $2.28. Next, divide the difference of $2.28 by the standard deviation of $1.37, resulting in a z-score of 1.67. Finally, use a z-score table to find the corresponding percentile of 87%. This means that 87% of movie customers spend an average of $6.39 or less on concessions.

z-score = (6.39 - 4.11) / 1.37 = 1.67

percentile = 87%

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Answer:

Step-by-step explanation:

y = -5 (x² + 1 - 2x) + 5

y = -5x² + 10x - 5 + 5

y = -5x² + 10x

maximum height = y coordinate of the vertex of the parabola

x = -10/-10

x = 1

y = -5 (1)² + 10 (1)

y = -5 + 10

y = 5

5 meters

b) the x coordinate of the vertex is 1

1 meter

c) since the term without x is 0, the ball was kicked from the ground

0 meters

d) we have to find the x-intercept

-5x² + 10x = 0

-5/-5 x² + 10/-5 x = 0/-5

x² - 2x = 0

x(x-2) = 0

x = 0

x = 2

2 meters

The probability that they all have different birthdays is 0.903 or 90.3%.

1. Calculate the number of days in a year.

There are 365 days in a year.

2. Calculate the number of possible combinations for 3 people.

There are 365 x 365 x 365 = 4,738,625 possible combinations for 3 people.

3. Calculate the number of combinations where all 3 people have different birthdays.

There are 365 x 364 x 363 = 4,324,320 combinations where all 3 people have different birthdays.

4. Calculate the probability.

The probability that they all have different birthdays is 4,324,320 / 4,738,625 = 0.903 or 90.3%.

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Answer:

x = 0.5

Step-by-step explanation:

2 (x+1.25) = 3.5

Divide by 2 on both sides.

x + 1.25 = 1.75

Subtract 1.25 on both sides.

x = 0.5

Answer:

x = 0.5

Step-by-step explanation:

2(x+1.25) =3.5

Divide both sides by 2.

x+1.25 = 3.5/2

x + 1.25 = 1.75

Subtract 1.25 from both sides.

x = 0.5

Answer:

Functions

Step-by-step explanation:

ok so you gotta substitute x into the original then expand simplify collect like terms then your done

Answer:

110 degrees

Step-by-step explanation:

This is because they are alternate exterior angles

So they are the same angle

To establish the given identity, we need to first multiply the left side of the equation and write it as the difference of two squares. This can be done by using the difference of squares formula, which states that the difference of two squares can be written as the product of the square of the sum and the square of the difference.

The left side of the given equation can be written as:

(csc0+1)(csc0-1)

We can then apply the difference of squares formula to this expression to get:

(csc0+1)(csc0-1) = (csc0+1)(csc0-1)

Now, we can see that this expression is equivalent to cot 0 using the Pythagorean Identity. This identity states that the sum of the squares of the cosecant and cotangent of an angle is equal to 1. In this case, since (csc0+1)(csc0-1) = cot 0, we can use the Pythagorean Identity to rewrite the left side of the equation as (csc0^2 + cot0^2) = 1, which is equivalent to cot 0.

Therefore, the given identity is established using the Pythagorean Identity. This means that the correct answer is C. Pythagorean Identity.

As per the given confidence interval, the value of the mean is 1.96

The term confidence interval means a range of numbers constructed around a point estimate such as a sample mean or sample proportion.

Here we need to find at a 95% level of confidence we want to estimate the population mean for a quantitative variable that is normally distributed in the population there a 10 individuals in the random sample what is the value of mean.

While In the large-sample case, a 95% confidence interval estimate for the population mean is given by

=> x ± 1.96σ/√n.

Where the population standard deviation is denoted as σ, is unknown, And the the sample standard deviation is used to estimate σ in the confidence interval formula.

Here by the quantity 1.96σ/√n is often called the margin of error for the estimate.

Then the quantity σ/√n is the standard error, and 1.96 is the number of standard errors from the mean necessary to include 95% of the values in a normal distribution.

Therefore, the interpretation of a 95% confidence interval is that 95% of the intervals constructed in this manner will contain the population mean.

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Answer:

Below

Step-by-step explanation:

= sqt (45*10) = sqrt (450) = 15 sqrt 2

The expression √45 × √10 is simplified using the property of square roots to give an equivalent choice of 15√2

The product √45 × √10 can be simplified by using the property of square roots that states √(a × b) = √a × √b.

By application of this property, we have that:

√45 × √10 = √(45 × 10).

To simplify further, we find that 45 and 10 have a common factor of 5, and thus,

45 × 10 = 5 × (9 × 10)

45 × 10 = 5 × 90.

Now, we can rewrite √(45 × 10) as √(5 × 90).

Using the same property again, we obtain √5 × √90. Finally, we recognize that 90 can be factored into 9 × 10.

Thus;

√45 × √10 = √(2 × 9 × 25)

√45 × √10 = √2 × √225

√45 × √10 = √2 × 15

√45 × √10 = 15√2

Therefore, the expression√45 × √10 have an equivalent of 15√2

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Answer:

1. Apply a Pythagorean Identitie

2. Seperate the quotient into two terms.

3. Divide the common factor

4. Apply a reprical identity.

Step-by-step explanation:

The steps below in the image I just wrote.

I am not sure if your teacher would let you have a cheat sheet on the test or quiz. Remember your reciprocal identities and Pythagorean identities.