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2 years ago

Select the correct answer.

Mathematics

1 answer:

lana66690 [7]2 years ago

8 0

Answer:

The average rate of change for the interval [0,2] is 2.

Step-by-step explanation:

In order to find the points to complete the rate of change look at your graph. The intervals (0 and 2) are the x intercepts. If you look at the graph the y intercepts for 0 is 4, and the y intercept for 2 is 8. Then you use the slope formula, y2-y1/x2-x1, 8-4 is 4 and 2-0 is 2, four divided by two is two.

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The radius of the base of a right circular cone is 4 in., and its slant height is 15 in. If the radius and the slant height are

alukav5142 [94]

Answer:

Step-by-step explanation:

radius r = 4 in

slant height L = 15 in

base area = πr² = 16π in²

lateral area = πrL = 60π in²

surface area = 76π in²

r = 4×6, L = 15×6

base area = (4×6)²π = 16π×36

lateral area = 60π×36

surface area is multiplied by 36

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2 years ago

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Step-by-step explanation:

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2 years ago

What is the fraction of 2.6

Solnce55 [7]

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2 years ago

Read 2 more answers

In a recent study of 42 eighth graders, the mean number of hours per week that they watched television was 19.6. Assume the popu

olya-2409 [2.1K]

Answer:

$19.6-2.42\frac{5.8}{\sqrt{42}}=17.43$

$19.6+2.42\frac{5.8}{\sqrt{42}}=21.77$

And the best option for this case would be:

a. (17.5, 21.7)

Step-by-step explanation:

Information given

$\bar X= 19.6$ represent the sample mean

$\mu$ population mean

$\sigma= 5.8$ represent the population deviation

n=42 represent the sample size

Confidence interval

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

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

The degrees of freedom, given by:

$df=n-1=42-1=41$

Since the Confidence is 0.98 or 98%, the significance would be $\alpha=0.02$ and $\alpha/2 =0.1$ , and the critical value would be $t_{\alpha/2}=2.42$