All categories

3 years ago

What is the relationship between pi, circumstance, and area?

Mathematics

1 answer:

frozen [14]3 years ago

7 0

You use pi in the equation to find the circumference and/or area of a circle.

You might be interested in

Find three rational numbers between -2 and 1 ?

netineya [11]

Answer:

-19/10,-18/10,-17/10

Step-by-step explanation:

multiply the both numbers up and down by 10.

then find the numbers

5 0

2 years ago

Read 2 more answers

I NEED HELP PLEASE PLOT IT OR LOCATE IT

alekssr [168]

Answer: 2 2/3 is located on the third line after two and 1 5/6 is located on the last line after one

Step-by-step explanation:

8 0

2 years ago

What is the solution to the equation 1/3(x-2)=1/5(x+4)+2 ?

Airida [17]

7.3 is the answer i believe

3 0

3 years ago

Please help thank u!

ale4655 [162]

Answer:

6=65

Step-by-step explanation:

5 0

3 years ago

If you want to be 95% confident of estimating the population mean to within a sampling error of plus or minus3 and the standard

Aleksandr [31]

Answer:

The sample size required is at least 171

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

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

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

What sample size is required?

A samle size of at least n is required, in which n is found when $M = 3, \sigma = 20$

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

$3 = 1.96*\frac{20}{\sqrt{n}}$

$3\sqrt{n} = 20*1.96$

$\sqrt{n} = \frac{20*1.96}{3}$

$(\sqrt{n})^{2} = (\frac{20*1.96}{3})^{2}$

$n = 170.7$

Rouding up

The sample size required is at least 171

5 0

2 years ago