Solve the system of equations. <br> y=3x + 24<br> y=9x

Each day, Tally's baby sister eats 1 4 cup of rice cereal in the morning and 1 4 cup of rice cereal in the afternoon. Select the

Nadusha1986 [10]

She eats 2/4 every day so 1/2

it would take her 8 days to eat 4 cups

3 0

4 years ago

The main office staff collected 55 cans, the counseling staff collected 89 cans, and the custodial staff collected 67 cans.

Elena L [17]

What are you trying to ask here?

5 0

3 years ago

Read 2 more answers

Need help math question

lidiya [134]

My answer is 8 . Please check the answer.

5 0

3 years ago

Find the amplitude of the sine curve shown below. a. 3 b. p c. 1.5 d. 6

Nezavi [6.7K]

Answer:

Amplitude = 3

Step-by-step explanation:

Given

The sine curve above

Required

Determine the amplitude

To determine the amplitude of a sine curve, we have to calculate the distance between the horizontal line of the curve and the top or bottom of the function

Using the top of the curve as a point of reference;

Amplitude = Top of curve - Horizontal Line.

The horizontal line is always at point 0

From the graph above, the top of the curve is at point 3

Hence,

Amplitude = 3 - 0

Amplitude = 3

3 0

4 years ago

A doctor is measuring the average height of male students at a large college. The doctor measures the heights, in inches, of a s

denpristay [2]

Answer:

For this case the 95% confidence interval is given (63.5 , 74.4) and we want to conclude about the result. For this case we can say that the true mean of heights for male students would be between 63.5 and 74.4. And the best answer would be:

b. The doctor can be 95% confident that the mean height of male students at the college is between 63.5 inches and 74.4 inches.

Step-by-step explanation:

Notation

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

In order to calculate the mean and the sample deviation we can use the following formulas:

$\bar X= \sum_{i=1}^n \frac{x_i}{n}$ (2)

$s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}$ (3)

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=40-1=39$

For this case the 95% confidence interval is given (63.5 , 74.4) and we want to conclude about the result. For this case we can say that the true mean of heights for male students would be between 63.5 and 74.4. And the best answer would be:

b. The doctor can be 95% confident that the mean height of male students at the college is between 63.5 inches and 74.4 inches.

3 0

4 years ago

Solve the system of equations. y=3x + 24 y=9x