Please help me guys!

Answer:

85

Step-by-step explanation:

Answer:

(2b-a)x(2b-3)x(2b+3)

Step-by-step explanation:

a) chi-square = (30-1) * 7.338 / 5 = 42.456 b) The probability of having a sample variance between 2.766 and 7.883 is the difference between the cumulative probabilities of chi-square2 and chi-square1.

To find the probability in both cases, we need to use the chi-square distribution with n-1 degrees of freedom, where n is the sample size.

a) To find the probability that the sample variance is greater than 7.338, we need to find the upper tail probability of the chi-square distribution.

The chi-square statistic is calculated as:

chi-square = (n-1) * s^2 / sigma^2

In this case, n = 30, s^2 = 7.338, and sigma^2 = 5.

chi-square = (30-1) * 7.338 / 5 = 42.456

b) To find the probability that the sample variance is between 2.766 and 7.883, we need to find the cumulative probability within that range.

First, we calculate the chi-square statistics for both values:

chi-square1 = (30-1) * 2.766 / 5 = 15.359

chi-square2 = (30-1) * 7.883 / 5 = 43.179

The probability of having a sample variance between 2.766 and 7.883 is the difference between the cumulative probabilities of chi-square2 and chi-square1.

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Answer:

1/12

Step-by-step explanation:

[tex]\frac{1}{4} - \frac{1}{6}[/tex]

[tex]\frac{6 - 4}{24}[/tex]

[tex]\frac{2}{24}[/tex]

Converting to its simplest form, divide numerator and denominator by 2 = 1/12

Step-by-step explanation:

5. 4b = b + b + b + b (A)

4b = 2b + 2b (C)

6. 111 = 14a

a = 111/14

a = 7.92

Answer:

92.75 miles

Step-by-step explanation:

3.71 / 2 = 1.855

1.855 * 50 miles = 92.75 miles

Answer:

12,100 feet

Step-by-step explanation:

The longest run way at an airport has the shape of a rectangle and an area of 1,573,000 sq ft. This run way is 130 feet wide. How long is the run way?

The area of a rectangle = Length × Width

Width = 130 feet

Area = 1,573,000 sq ft

The Length = Area/Width

= 1,573,000 sq ft/130 feet

= 12,100 feet

Therefore, the runaway is 12,100 feet long.

B

this is the answer

Step-by-step explanation:

the formula for the area of a sector is

(x°(r^2)π)/360

with x being the angle

r bring the radius of the circle

(255(13.4)^2π)/360

399.6

Hope that helps :)

Answer:

The answer is 399.6 not 399.4. I put 399.6 as my answer on acellus and I got it right.

Using Euler's Method with a step size of 0.3 and the given initial data and differential equation, the approximate value of y(1.3) is 0.3 × 2[tex]e^{0.3[/tex].

To approximate the value of y(1.3) using Euler's Method, we need to take one step with a step size of h and update the y-value accordingly. Here's how to do it step by step:

Determine the step size, h. In this case, we want to approximate y(1.3) using the initial data at y(1). Since we know that x increases from 1 to 1.3, the step size is h = 1.3 - 1 = 0.3.

Calculate the slope at the initial point (x0, y0). The slope can be found using the given differential equation y'(x) = 2x[tex]e^a[/tex] - y. Plugging in the values x0 = 1 and y0 = 0, we get:

y'(1) = 2(1)[tex]e^{0.3[/tex] - 0 = 2[tex]e^{0.3[/tex].

Compute the approximate value of y at the next step. Using Euler's Method, we can update the y-value as follows:

y1 = y0 + h × y'(x0, y0)

= 0 + 0.3 × 2[tex]e^{0.3[/tex].

Evaluating the expression:

y1 = 0.3 × 2[tex]e^{0.3[/tex].

This gives us the approximate value of y(1.3) using Euler's Method with the given initial data and differential equation.

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Answer:

i dont know

Step-by-step explanation:

Table one represents a linear function for the given data.

A linear function is a mathematical function that can be written in the form:

y = mx + b

where "m" and "b" are constants, and "x" and "y" are variables.

In this form, "m" represents the slope of the line, and "b" represents the y-intercept, the point where the line crosses the y-axis. The slope of the line is the rate of change of the function, representing how much the value of "y" changes for every unit change in "x".

The given table is,

x         y

1         5

2       10

3       15

4       20

5       25

The slope of the given data is,

m = ( 10 - 5 ) / ( 2 - 1 ) = 5

m = ( 15 - 10 ) / ( 3 - 2 ) = 5

m = ( 20 - 15 ) / ( 4 - 3 ) = 5

Here the slope is constant, so the function is linear.

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Answer:

cannot be simplified

Step -by-step explanation:

[tex]3\sqrt{7} - 5\sqrt[4]{7} \\[/tex]

The indexes are not the same so the radicals cannot be combined.

cannot be simplified

Answer: 134

(Hope this helped with whatever you needed it for <3)

Answer: WY = 27

Step-by-step explanation:

Due to WX being a Perpendicular Bisector WY = WZ

4x - 5 = 2x + 11

Add 5 to both sides

4x = 2x + 16

Subtract 2x from both sides

2x = 16

Divide by 2

x = 8

So 4x - 5 of x = 8

4*8 = 32 - 5 =27

Answer:

27

Step-by-step explanation:

WY = WZ because XZ = XY

[tex]2x + 11 = 4x - 5\\(2x + 11) - 11 = (4x - 5) -11\\2x = 4x - 16\\-2x = -16\\x = 8\\\\WY = 4x - 5\\WY = 4(8) -5\\WY = 32 - 5\\WY = 27[/tex]

Answer:

102

Step-by-step explanation:

The mode is the number that appears the most in the data set. 102 appears 3 times while the others only once

The test statistic is 1.09. The p-value is the probability of obtaining a test statistic at least as extreme as the one observed, assuming the null hypothesis is true. The range of the p-value is 0.1 to 1.

If the p-value is less than 0.05, we reject the null hypothesis and conclude that the new brand of cookies has more than 10 chocolate chips per cookie.

If the p-value is greater than 0.05, we fail to reject the null hypothesis and cannot conclude that the new brand of cookies has more than 10 chocolate chips per cookie.

In this case, the p-value is between 0.1 and 1. Therefore, we cannot conclude that the new brand of cookies has more than 10 chocolate chips per cookie.

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The slope of the graph of the function g(x) is 1, indicating that for every unit increase in x, the corresponding value of g(x) increases by 1.

To find the slope of the graph of the function g(x), we can use the power rule of differentiation. Let's differentiate g(x) step by step:

Step 1: Express g(x) in a simplified form.

g(x) = 4(1/4[tex]x^1[/tex])

Step 2: Simplify the expression.

g(x) = x

Step 3: Differentiate g(x) to find the slope.

The derivative of g(x) with respect to x is simply 1, as the derivative of x with respect to itself is 1.

Therefore, the slope of the graph of g(x) is 1.

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Answer:

Lower (or First) Quartile = 15

Step-by-step explanation:

Answer:

15 I think

Step-by-step explanation:

been a while since I did that but I think 15

Answer:

-4y - 7

Step-by-step explanation:

−4y−4+(−3)

-4y - 4 - 3

-4y - 7

may not know the answer that well but try this called symbolab. Hope that could help you

Answer:

Step-by-step explanation:

Cos(x)=18/44=0.41

x=65.85

Using synthetic division and the remainder theorem, we can determine if [x−(3−2i)] is a factor of f(x)=x^2−6x+13.

To determine if [x−(3−2i)] is a factor of f(x)=x^2−6x+13, we can use synthetic division. First, we need to rewrite the given factor in the form x - c, where c is the conjugate of 3 - 2i, which is 3 + 2i.

Performing synthetic division with 3 + 2i as the divisor: f(x)=x^2−6x+13, we can use synthetic division. First, we need to rewrite the given factor in the form x - c, where c is the conjugate of 3 - 2i, which is 3 + 2i.

Performing synthetic division with 3 + 2i as the divisor:

 3 - 2i  |  1   -6   13

           __________________

           (remainder)

If the remainder is zero, then [x−(3−2i)] is a factor of f(x). However, if the remainder is nonzero, then [x−(3−2i)] is not a factor of f(x). Therefore, based on the result of the synthetic division, we can determine if [x−(3−2i)] is a factor of f(x).

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Answer: 4/5

Step-by-step explanation: It is 8/10, but if you simplify it, it is 4/5.

The sample size required to ensure a margin of error of at most 0.065 for a 92.5% confidence interval is 523.

To estimate the proportion of shoppers using credit cards with a desired margin of error and confidence level, determining the appropriate sample size is crucial.

In this scenario, we aim to achieve a margin of error of no more than 0.065 for a 92.5% confidence interval. The sample size required to fulfill these criteria is 523.

To comprehend the significance of these calculations, it's essential to understand the concepts of margin of error and confidence level. The margin of error represents the maximum amount of uncertainty we can tolerate in our estimate.

In this case, we want our estimate of the proportion of shoppers using credit cards to be accurate within ±0.065. A smaller margin of error indicates greater precision in our estimate.

The confidence level, on the other hand, reflects the level of certainty we have in the accuracy of our estimate.

A confidence level of 92.5% implies that if we were to repeat the sampling process numerous times, we would expect approximately 92.5% of the resulting confidence intervals to contain the true proportion of credit card-using shoppers.

The formula to calculate the sample size required for a proportion estimation is based on the desired margin of error, confidence level, and an assumed proportion (usually 0.5 for maximum variability).

This formula incorporates a z-value, which corresponds to the desired confidence level. For a 92.5% confidence level, the z-value is approximately 1.81.

By plugging the values into the formula and solving for the sample size, we find that a sample size of 523 is necessary to estimate the proportion of shoppers using credit cards with a margin of error no greater than 0.065 and a confidence level of 92.5%.

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Answer:

3(x+y)=45

x+y=15

y=-1x +15

so

slope(m) = -1

Answer:

It's D

Step-by-step explanation:

Answer: pull the upper right hand corner (of the smaller box) all the way to the upper right hand corner of the bigger box, then pull the upper left hand corner of the smaller box all the way over to the other side but leave two squares on the end, this gives you 18 boxes across the top which works since 2cm is three boxes. make sure each side of the square has 18 boxes and you’ll be good

Step-by-step explanation:

In the term, 17y 17 is the coefficient of 17y.

A quantity or number that is combined with a variable is known as a coefficient. The variable is often multiplied by an integer, which is then printed next to it.

Terms that have the same variables raised to the same power are referred to as like terms. The only difference is in the numerical coefficients.

The term 17y together is a variable, In 17y 'y' is also a variable.

In front of 'y' the constant number is 17 and it is called the coefficient of 'y'.

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