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3 years ago

Will give brainliest.

Mathematics

2 answers:

sasho [114]3 years ago

7 0

Answer:

y^7

Step-by-step explanation:

12345 [234]3 years ago

6 0

Know that: (x^a)^b = x^ab
You would multiply

4 * 3 = 12
Solution: y^12

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A full bag of dog food weighs 512 pounds.

Iteru [2.4K]

Answer:

umm

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

In 2006, 95% of new cars in the US came with a spare tire. In 2017, 72% came with a spare tire.

MArishka [77]

Using the Central Limit Theorem, it is found that:

The mean is 0.23.

The standard deviation is $s = \sqrt{\frac{0.95(0.05)}{250} + \frac{0.72(0.28)}{250}}$ .

<h3>Central Limit Theorem</h3>

It states that for a <u>proportion p in a sample of size n</u>, the sampling distribution of sample proportions has mean $p$ and standard deviation $s = \sqrt{\frac{p(1 - p)}{n}}$

When two variables are subtracted, the mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.

In 2006, 95% of new cars in the US came with a spare tire, with a sample of 250, hence:

$p_1 = 0.95, s_1 = \sqrt{\frac{0.95(0.05)}{250}}$

In 2017, 72% of new cars in the US came with a spare tire, with a sample of 250, hence:

$p_2 = 0.72, s_2 = \sqrt{\frac{0.72(0.28)}{250}}$

Hence, for the distribution of differences:

$p = p_1 - p_2 = 0.95 - 0.72 = 0.23$

$s = \sqrt{s_1^2 + s_2^2} = \sqrt{\frac{0.95(0.05)}{250} + \frac{0.72(0.28)}{250}}$

To learn more about the Central Limit Theorem, you can take a look at brainly.com/question/16695444

7 0

2 years ago

Write an equation in slope-intercept form of the line that passes through <br> (1,-9) and (-3,-9)

yulyashka [42]

Answer: y = 9

Step-by-step explanation:

Since two points are given , we will use the formula for finding the equation in two points form , which is

$\frac{y -y_{1}}{x -x_{1}}$ = $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$x_{1}$ = 1

$x_{2}$ = -3

$y_{1}$ = -9

$y_{2}$ = -9

Substituting into the formula , we have

$\frac{y-(-9)}{x - 1}$ = $\frac{-9-(-9)}{-3-1}$

$\frac{y+9}{x - 1}$ = $\frac{-9+9}{-3-1}$

$\frac{y+9}{x - 1}$ = $\frac{0}{-4}$

$\frac{y+9}{x - 1}$ = 0

y + 9 = 0

y = 9

4 0

3 years ago

What is the value of the expression: 3 -4th power

VLD [36.1K]

The phrases 3 to the 4th power and 3 to the power of 4 are equivalent to the algebraic operations 4 × 4 × 4 × 4 and 44.

7 0

3 years ago

Read 2 more answers

Explain why the slope b of the least-squares line always has the same sign (positive or negative) as the sample correlation coef

rodikova [14]

Answer:

b = r(sy/sx)

Step-by-step explanation:

The sign of the slope Coefficient and the correlation are the same because both the slope and correlation Coefficient evaluates the changes in one variable with respect to the other . A decrease in y as x increases will result in a negative slope value and also a negative correlation Coefficient. While increase in x which results in the increase in y imvariable will result in a positive correlation Coefficient value and r value.

Slope, b = correlation Coefficient,r (Sy /Sx)

Sx = standard deviation of x values

Sy = standard deviation of Y Values

5 0

2 years ago