All categories

3 years ago

If the ratio of a circle's sector to its total area is 3/8, what is the measure of its sector's arc?

Mathematics

2 answers:

mars1129 [50]3 years ago

6 0

Imagine the area is 360 degrees, or $2\pi$ radians.

You would multiply it by (3/8) to get your answer.

jasenka [17]3 years ago

6 0

I'm guessing the answer is 135 degrees

You might be interested in

Solve for w.<br> 3w+2w= 10<br> Simplify your answer as much as possible.<br> W =

nalin [4]

Answer:

3w+2w= 10

5w= 10

w = 10/5

w = 2

8 0

3 years ago

Read 2 more answers

A bag contains 4 red balls numbered 2, 4, 5, 8 and 6 white balls numbered 1, 3, 6, 7, 9, 10. if a ball is drawn at random, what

SIZIF [17.4K]

8 percent
4 percent i think

8 0

3 years ago

What is (14,-12) translated 6 units left

marissa [1.9K]

Going to the right or left when doing translation effects the x coordinate. In this case, the x coordinate is 14. Since we are moving 6 units to the left, we must subtract 6 from 14. Moving to the left is negative and moving to the right is positive.

14 - 6 = 8

The answer is (8,-12)

7 0

4 years ago

Help me please <br> Using table determine equation for the table

adell [148]

Answer:

slope = 0.06

cost of plan = $45.44

Step-by-step explanation:

cost of plan*

3 0

3 years ago

A church group is interested in estimating the true proportion of Americans who attend weekly religious services. How large a sa

artcher [175]

Answer:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

We can use an estimatior for the population proportion as $\hat p=0.5$ since we don't know previous info. And replacing into equation (b) the values from part a we got:

$n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11$

And rounded up we have that n=1068

Step-by-step explanation:

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since the confidence level is 99%, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.005$ . And the critical value would be given by:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

And on this case we have that $ME =\pm 0.03$ and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

We can use an estimatior for the population proportion as $\hat p=0.5$ since we don't know previous info. And replacing into equation (b) the values from part a we got:

$n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11$

And rounded up we have that n=1068

8 0

3 years ago