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3 years ago

What does 8x power of 2 equals

Mathematics

1 answer:

jolli1 [7]3 years ago

4 0

Answer:

Step-by-step explanation:

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A bakery sells a giant decorated cookie for birthdays. The area of the cookie is about 113 square inches. What is the circumfere

umka21 [38]

Answer:

<em>38 inches</em>

Step-by-step explanation:

The cookies is in the shape of a circle. The formula for the area of a circle is:

$A=\pi r^2$

Where r is the radius

The area is given as 113, so we can find the radius:

$A=\pi r^2\\113=\pi r^2\\r^2=\frac{113}{\pi}\\r=\sqrt{\frac{113}{\pi}} \\r=5.997$

We need to find the circumference, which has the formula:

$C=2\pi r$

Where r is the radius (We got r = 5.997)

We substitute and find:

$C=2 \pi r\\C = 2 \pi (5.997)\\C=37.68$

So, the circumference is 37.68 inches.

<em>Rounded to nearest inch, that would be:</em>

<em>38 inches</em>

3 0

3 years ago

Mark the absolute maximum point of the graph

mixer [17]

the maximum is point

6,-2

5 0

4 years ago

Read 2 more answers

A polynomial has x-intercepts of 2, 0, and –1, and passes through the point (1, –10). Which functions could represent this graph

Kipish [7]

D or c depends if girl or boy

6 0

3 years ago

The radius, R , of a sphere is 6.8 m. Calculate the sphere's volume, V . Use the value 3.14 for pi , and round your answer to th

svetlana [45]

Answer:

V = 1316.4 m^3

Step-by-step explanation:

The volume of a sphere is given by

V = 4/3 pi r^3

V = 4/3 (3.14 ) ( 6.8) ^3

= 1316.421973 m^3

Round to the nearest tenth

V = 1316.4 m^3

3 0

3 years ago

Darren wants to estimate the mean age in a population of trees. He'll sample nnn trees and build a 90\%90%90, percent confidence

Alchen [17]

Using the z-distribution, as we have the standard deviation for the population, it is found that the smallest sample size required to obtain the desired margin of error is of 77.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

The margin of error is given by:

$M = z\frac{\sigma}{\sqrt{n}}$

In this problem, we have that the parameters are given as follows:

$M = 3, z = 1.645, \sigma = 16$ .

Hence, solving for n, we find the sample size.

$M = z\frac{\sigma}{\sqrt{n}}$

$3 = 1.645\frac{16}{\sqrt{n}}$

$3\sqrt{n} = 1.645 \times 16$

$\sqrt{n} = \frac{1.645 \times 16}{3}$

$(\sqrt{n})^2 = \left(\frac{1.645 \times 16}{3}\right)^2$

$n = 76.97$

Rounding up, the smallest sample size required to obtain the desired margin of error is of 77.

More can be learned about the z-distribution at brainly.com/question/25890103

4 0

2 years ago