Can someone pls help with this

Answer:

[tex]\ln (y) = 0.210x-2.601[/tex]

Step-by-step explanation:

Given table:

[tex]\begin{array}{|c|c|}\cline{1-2} \sf Length & \sf Diameter \\x & y\\\cline{1-2} \vphantom{\dfrac12} 2 & 0.113\\\cline{1-2} \vphantom{\dfrac12} 3& 0.151\\\cline{1-2} \vphantom{\dfrac12} 4& 0.192\\\cline{1-2} \vphantom{\dfrac12} 5& 0.222\\\cline{1-2} \vphantom{\dfrac12} 6& 0.262\\\cline{1-2} \end{array}[/tex]

To convert  y = abˣ  to linear form, take natural logs of both sides and rearrange:

[tex]\begin{aligned}y=ab^x \implies \ln y &= \ln ab^x\\\implies \ln y &= \ln a + \ln b^x\\\implies \ln y &= \ln a + x \ln b\\\implies \ln y &=x \ln b+ \ln a\end{aligned}[/tex]

This is in the straight-line form y = mx + c.

Substitute the first and last values of x and y from the table into the natural log formula:

Subtract the first equation from the second equation to eliminate ln(a);

[tex]\implies \ln 0.262 - \ln 0.113 = 6 \ln b - 2 \ln b[/tex]

[tex]\implies \ln 0.262 - \ln 0.113 = 4 \ln b[/tex]

Apply the quotient log law:

[tex]\implies \ln \dfrac{0.262}{0.113} = 4\ln b[/tex]

Rearrange and solve for ln(b):

[tex]\implies \ln b = \dfrac{1}{4}\ln \dfrac{0.262}{0.113}[/tex]

[tex]\implies \ln b = 0.210\; \sf (3\;d.p.)[/tex]

Substitute the found value of ln(b) into one of the equations and solve for ln(a):

[tex]\implies \ln 0.262 = 6 \cdot \dfrac{1}{4}\ln \dfrac{0.262}{0.113}+\ln a[/tex]

[tex]\implies \ln a=\ln 0.262 -\dfrac{6}{4}\ln \dfrac{0.262}{0.113}[/tex]

[tex]\implies \ln a = -2.601\; \sf (3\;d.p.)[/tex]

Substitute the found values of ln(a) and ln(b) into the formula to create an equation for ln(y):

[tex]\boxed{\ln (y) = 0.210x-2.601}[/tex]

Answer:

To round a number to the nearest thousand, we first need to identify the thousands digit in the number. In this case, the thousands digit is 8, because 87388 is between 80000 and 90000.

To determine whether to round up or down, we need to look at the hundreds digit, which is 7 in this case. If the hundreds digit is 5 or greater, we round up. If the hundreds digit is less than 5, we round down. In this case, the hundreds digit is 7, which is greater than or equal to 5, so we need to round up.

To round up, we add 1000 to 87388, which gives us 88388. So, 87388 rounded to the nearest thousand is 88000.

Answer:

Step-by-step explanation:

So your first point has x=325.0 and y=1.10, your second point has x=348.9 and y=1.40, and so on.

The graph should look something like this:

The conclusion that you would draw from your plot is that the power seems to vary linearly with the speed. The data points are almost in a straight line. They are not perfectly aligned, of course. There is always some variability in real data, but you can see a trend.

The value of the trigonometric expression will be 1. Then the correct option is C.

Mathematical capabilities inspect the collaboration between the aspects and points of a three-sided structure.

The meaning of straightforwardness is simplifying something to accomplish or get a handle on while likewise making it somewhat less troublesome.

The expression is given below.

⇒ tan²x / sec²x + cot²x / cosec²x

Simplify the expression, then the value of the expression is given as,

⇒ tan²x / sec²x + cot²x / cosec²x

⇒ (sin²x × cos²x) / cos²x + (cos²x × sin²x) / sin²x

⇒ sin²x + cos²x

⇒ 1

The worth of the mathematical articulation will be 1. Then, at that point, the right choice is C.

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x = 6 is the value of x does f(x) = 2.

What is a function?

A relation between a collection of inputs and outputs is known as a function. A function is, to put it simply, a relationship between inputs in which each input is connected to precisely one output. Each function has a range, codomain, and domain.

Here, we have

Given function:  f(x) = −1 + 0.5x

We have to find the value of x does f(x) = 2.

For this, we put the different values of x and see what value satisfies the given function.

For x = -6

f(x) = −1 + 0.5(-6)

f(x) = -4

For x = 5

f(x) = −1 + 0.5(5)

f(x) = 1.5

For x = 6

f(x) = −1 + 0.5(6)

f(x) = 2

Hence, x = 6 is the value of x does f(x) = 2.

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a) probability that a randomly selected resident has red hair is 0.16

b) probability that a randomly selected resident has brown or black hair   is  0.67

c) probability that a randomly selected resident does not have blonde hair is 0.8.

P(black hair color) = 0.17

P (Brown hair)  = 0.47

P (blonde hair)  = 0.20

a) Probablity that a randomly chosen resident has red hair is:

P(red hair) = 1 - P(black hair) - P(brown hair) - P(blonde hair)

=> 1 - 0.17 - 0.47 - 0.20

=> 0.16

b) P(brown hair) + P(black hair) is the likelihood that a randomly chosen resident has brown or black hair (black hair)

= 0.47 + 0.20

= 0.67

c) The Probability that a randomly chosen resident does not have blonde hair is equal to 1 - P (blonde hair)

=> 1 - 0.20

=> 0.8

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The probability that a randomly selected resident has red hair and brown or black and  black, brown, or blonde hair is 0.16, 0.80 and 0.20

The probabilities of a randomly selected resident having black, brown, or blonde hair are 0.17, 0.47, and 0.20 respectively.

P (black hair) = 0.17

P (brown hair) = 0.47

P (blonde hair) = 0.20

The probability is the measure of the likelihood of an event to happen. It measures the certainty of the event. The formula for probability is given by; P(E) = Number of Favourable Outcomes/Number of total outcomes.

(a). Probability that a randomly selected resident has red hair is

P (red hair) = 1 -P(black hair)-P (brown hair)-P (blonde hair)

 = 1 - 0.17 - 0.47 - 0.2

 = 0.16

(b).  Probability that a randomly selected resident has brown or black hair

  = P (brown hair) + P (black hair)

  = 0.47 + 0.20  

  = 0.67

(c). Probability that a randomly selected resident does not have blonde hair

   = 1 - P (blonde hair)

   = 1 - 0.20

   = 0.80

Therefore, the probability is 0.16, 0.80 and 0.20.

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A. The functions are given as follows:

B. The company from which the family should rent the truck is: Company Y.

There are two costs in the problem, given as follows:

The fixed costs for Company X are given as follows:

The variable cost is of 0.59 per mile, hence the function, considering a trip of m miles, is given as follows:

X(m) = 59.90 + 150 + 36 + 0.59m.

X(m) = 245.9 + 0.59m.

The fixed costs for Company Y are given as follows:

The variable cost is of 0.79 per mile, hence the function, considering a trip of m miles, is given as follows:

Y(m) = 39.90 + 52 + 0.79m

Y(m) = 91.9 + 0.79m.

The trip is of 750 miles, hence the costs are given as follows:

Due to the lower cost, Company Y should be chosen.

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Answer:

Step-by-step explanation:

LCL would be 4 minutes and UCL would be 6 minutes if the company uses 2-sigma control limits instead.

The average of a group of variables is referred to as the mean in mathematics and statistics. There are several methods for calculating the mean, including simple arithmetic means (adding the numbers together and dividing the result by the number of observations), geometric means, and harmonic means. The arithmetic mean, also known as the arithmetic average or simply the mean or average, is the sum of a set of numbers divided by the total number of numbers in the set. The collection frequently consists of a series of findings from a survey, experiment, or observational study.

Given

LCL = 3.5 minutes

UCL = 6.5 minutes

Mean = LCL + UCL/2

Mean = 3.5 + 6.5/2

Mean = 5

Standard deviation = UCL - LCL/6

Standard deviation = 6.5 - 3.5/6

Standard deviation = 0.5

LCL = 5 - 2(0.5)

LCL = 4

UCL = 5 + 2(0.5)

UCL = 6

LCL = 4 minutes and UCL = 6 minutes

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The equation that can be used to find b, when E and n are known is: b = (E - 12n) / 8.

This equation can be derived from the original equation of E=8b+12n. To solve for b, we can start by subtracting 12n from both sides of the equation to isolate b. We then divide both sides of the equation by 8 in order to solve for b.

The result is b = (E - 12n) / 8. This equation can be used to find the number of bracelets (b) when the total earnings (E) and the number of necklaces (n) are known.

We can rearrange the equation to solve for b.

E = 8b + 12n

Subtract 12n from both sides:

E - 12n = 8b

Divide both sides by 8:

(E - 12n)/8 = b

Therefore, the equation to find b, when E and n are known, is:

b = (E - 12n)/8

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Answer:

Step-by-step explanation:

To find the minimum number of daisies and lilies that Manuel must have watered, we need to find the least common multiple (LCM) of 11 and 12. The LCM of two numbers is the smallest positive integer that is a multiple of both numbers.

To find the LCM of 11 and 12, we can list the multiples of each number and find the smallest number that appears in both lists. The multiples of 11 are 11, 22, 33, 44, 55, 66, 77, 88, 99, 110, 121, etc. The multiples of 12 are 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, etc.

We can see that the smallest number that appears in both lists is 11, which is the LCM of 11 and 12. Therefore, the minimum number of daisies and lilies that Manuel must have watered is 11. If he watered the same number of each flower, he must have watered at least 11 daisies and 11 lilies.

The solution is A = 37

The value of the equation A = 8a + 3b - 10 + c² is A = 37

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is given by

A = 8a + 3b - 10 + c²

When the value of a = 2 , the value of b = 5 and the value of c = 4 ,

The equation A is given as

Substitute the value of a , b and c in the equation , we get

A = 8a + 3b - 10 + c²

A = 8 ( 2 ) + 3 ( 5 ) - 10 + 4²

A = 16 + 15 - 10 + 16

On simplifying the equation , we get

A = 31 + 6

The value of A = 37

Therefore , the value of A is 37

Hence , The value of the equation A = 8a + 3b - 10 + c² is A = 37

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Answer:

Step-by-step explanation:

There are 4 kings in a deck of playing cards.

There are 52 cards in a deck.

So the probability is 4 out of 52.

Which is 4/52,

Which can be reduced to 1/13.

4 divided by 4 = 1 and 52 divided by 4 =13.

The solution of the differential equation is given by r = 5tan(t + c) where c is the constant of integration, determined by the initial condition (x, 5).

The given differential equation is dr sec21dt tant 1. This is a first order linear differential equation which can be solved using an integrating factor. The integrating factor is given by e^(integral(sec^2(t)dt)). The solution of the equation is given by

[tex]r = (integral(sec^2(t))) + c[/tex]

where c is the constant of integration

Let y = sec(2x)

dy/dt = 2tan(2x)sec(2x)

Now, substituting the given point, we get

5 = sec(2x)

⇒ 2x = arccosec(5)

⇒ x = arccosec(5)/2

Now, substituting this in the equation of the differentiable curve, we get

[tex]\int\limits^a_b {x} \, dx dy/dt = 2tan(arccosec(5))sec(arccosec(5))[/tex]

Hence, the solution of the differential equation passing through the given point is y = sec(2x) = sec(arccosec(5))

or r = sec(arccosec(5))

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Answer:

Below

Step-by-step explanation:

16500 - 6800 = 9700 interest required to meet this situation in 14 years

6800 * i * 14  = 9700       where i = decimal interest

i = 9700/(6800*14) = .1018  = 10 .2 %

Answer:

h = 6

Step-by-step explanation:

h is the short leg for AD in ΔADC: AD = 12

h is the long leg for DB in ΔCDB: DB = 3

Hence:

12/h = h/3

3 * 12/h = 3 * h/3  ==> isolate h by multiplying 3 on both sides

36/h = h

h * 36/h = h*h  ==> multiply by h on both sides to remove fractions

36 = h^2

h = [tex]\sqrt{36}[/tex]

h = 6

On solving the provided question, we can say that - the instantaneous rate of change of the function at the given value, by solving the equation  y = 11 - 5x, f'(1) = 3-8 = -5

A mathematical equation is a formula that uses the equals symbol (=) to link two expressions and represent their equivalence. A mathematical statement that demonstrates the equality of two mathematical expressions is an equation in algebra, in its most basic form. Consider the equation 3x + 5 = 14, where 3x + 5 and 14 are two expressions that are separated by the symbol "equal."

y = f(x) =

[tex]x^3 - 4x^2 + 7 \\at x =1[/tex]

f(x) = 3-4+7

= 6

F'(x) = [tex]3x^2 - 8x[/tex]

f'(1) = 3-8 = -5

equation = y - 6 = -5(x-1)

y = 11 - 5x

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The correct option is (d) i.e. the range of the relation is {-5, 0, 2, 4}.

What is Range ?

A function's range is a collection of all of its potential results, or alternatively, the collection of all conceivable representations of the domain's elements.

Given, {(2, -5), (1, 4), (-3, 0), (6, 2)}

Range is the result of a relation.

let say, X⇒ Y is a relation where X represents the domain and Y represents the range and both can be represented as ( X, Y).

So, all the values at the position of Y are called range of the given relation.

Hence, Range will be {-5, 0, 2, 4}.

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An inequality that can represent the sum of a number and 11.5 is more than −4.5 is  b + 11.5 > −4.5 .

What is inequality?

In mathematics, a relationship between two expressions or values that are not equal to each other is called ‘inequality.’ So, a lack of balance results in inequality. For example, if you want to buy a new bicycle that costs 250 but you have 225. It is also an inequality as you are comparing two numbers that aren’t equal.

We use ‘=’ when two quantities are equal and when they are not equal we use the symbol ≠ to denote not equal. If two things are not equal, the first value can be either greater than (>) or lesser than (<) or greater than equal to (≥) or less than equal to (≤) the second value. So, as per the above example, 250 > 225.

Given :  the sum of a number and 11.5 is more than −4.5

Let us assume the number be "b"

according to question,

b + 11.5  is more than −4.

Thus, An inequality that can represent the sum of a number and 11.5 is more than −4.5 is  b + 11.5 > −4.5 .

Hence ,  b + 11.5 > −4.5 is the correct answer .

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Answer:

Step-by-step explanation:

thx for the points

The Solution for the given problem is 6x² +4x

What is Polynomial?

A polynomial is a mathematical statement made up of indeterminates and coefficients that solely includes the operations of addition, subtraction, multiplication, and positive-integer powers of variables.

Solution:

We are given with the values of the following terms f(x), g(x), and m(x)

f(x) = 3x² + 5x - z

g(x) = 5x² - 3x + z

m(x) = 2x² - 2x

To find: f(x) + [g(x) - m(x)]

so, we need to put the respective values in the equation and simplify it

3x² + 5x - z + [5x² - 3x + z - 2x² + 2x]

3x² + 5x - z + [3x² - x + z]

6x² +4x

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Answer:

Below

Step-by-step explanation:

Area of square - area of circle = remnant               area of circle = pi r^2

(40 x 40) - pi (20^2) = 343 . 4 in^2  left over

( this assumes the circle touches the edges of the square)

The correct statement regarding the unit circle is given as follows:

x = cos(θ) and y = sin(θ), and both functions have a period of 2π.

For an angle [tex]\theta[/tex] the unit circle is a circle with radius 1 containing the following set of points: [tex](\cos{\theta}, \sin{\theta})[/tex].

These points are contained according to the following identity:

[tex]\cos^2{\theta} + sin^2{\theta} = 1[/tex]

(standard identity of trigonometry).

From the x-coordinate and the y-coordinate of each point on the unit circle, the function definitions are given as follows:

The period of both functions is of 2π, as the entire unit circle forms an angle of 360º = 2π.

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Answer: 6

Step-by-step explanation:

x=8-2

x=6

The answer is 3.03

A sample mean is an average of a set of data . The sample mean can be used to calculate the central tendency, standard deviation and the variance of a data set.

Given here μ=62 σ=7 sample mean x = 65 and n=50

now the formula given is z= x-μ / σ÷√n

                                            = 65-62 / 7÷√50

                                            = 3√50/7

                                            = 3.03

Hence the final answer is 3.03

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Answer: No

Step-by-step explanation:

To determine whether the college graduate will have $200,000 saved in their retirement account after 25 years, we can use the formula for compound interest:

A = P * (1 + r/n)^(nt)

where A is the total amount of money in the account after the specified time, P is the initial amount of money deposited in the account, r is the annual interest rate, n is the number of times the interest is compounded per year, and t is the number of years the money is invested.

In this case, the initial amount deposited each month is $150, the annual interest rate is 10%, the number of times the interest is compounded per year is 12 (once per month), and the number of years the money is invested is 25. Plugging these values into the formula above gives us:

A = $150 * (1 + 10%/12)^(12*25) = $150 * (1.0083)^300 = $150 * 3.4955 = $524.33

Since the goal is to have $200,000 saved in the account after 25 years, the college graduate will not have enough money in their account if they contribute $150 per month at 10% interest. In order to reach their goal, they would need to save more money each month or earn a higher interest rate on their contributions.

Answer:

-------------------------------------------------

Out of 100 offices:

Remaining offices will be painted red:

Answer:

27 offices will be painted red.

Step-by-step explanation:

Yellow offices:

= 45% of 100 offices

= 0.45 × 100

= 45 yellow offices

Blue offices:

= 28% of 100 offices

= 0.28 × 100

= 28 blue offices

Red offices:

= Total number of offices - yellow offices - blue offices

= 100 - 45 - 28

= 55 - 28

= 27 red offices

Therefore, 27 offices will be painted red.

On solving the provided question, we can say that The $289,000 in fixed overhead that was used in production at that time

In accounting and economics, expenses for a firm are referred to as "fixed costs," often known as "indirect costs" or "overhead costs" since they are independent of the volume of goods or services the organization produces. They often have a periodic nature, such monthly rent or interest payments. These expenses are frequently capital costs as well.

The fixed overhead rate equals the budgeted amount Budgeted hours / Fixed overhead costs

Fixed overhead rate (predetermined) = 300,000/60,000

The fixed overhead rate (predetermined) is $5 per hour.

Applied Standard hours permitted with a predetermined overhead rate equals fixed overhead (fixed)

Fixed overhead applied = 57,800 * $5 per hour

$289,000 for applied fixed overhead

Therefore, $289,000 in fixed overhead was allocated to production during that time.

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Answer:

The function g(x) = log(-3x - 9) - 1 is obtained from the parent function f(x) = log(x) through two transformations: a shift to the right and a shift downward. The shift to the right is achieved by multiplying x by -3 and subtracting 9, which results in a rightward shift in the function's graph. The shift downward is achieved by subtracting 1 from the final result, which results in a downward shift in the function's graph. These transformations result in a graph that is shifted to the right and downward compared to the graph of the parent function.

[tex]log( - 3x - 9) = log( 3( - x - 3)) \\ = log( 3) + log( - (x + 3))[/tex]

A vertical shift by 1 unit downwards

A vertical shift by log(3) units upwards

A horizontal shift by 3 units to the left

A reflection along the line x=-3

Answer:

8/33

p(d'c')

not having a cat=12/18

not a dog =4/11

12/18×4/11=8/33

Ans=8/33

The answer is option 3: approval ratings tended to fall as stock prices rose.

This means that when stock prices rose, the approval ratings of George Bush's presidency decreased. This can be interpreted as an indication that people were not satisfied with the performance of the stock market during the Bush presidency. This could be because the stock market was not performing as well as expected or because the people were not satisfied with the decisions made by the Bush presidency that impacted the stock market.

Whatever the reason, the negative correlation between the stock market performance and Bush's approval ratings shows that when stock prices rose, approval ratings tended to fall.

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