All categories

3 years ago

(I’ll give brainliest)Find the area of the circle below leave your answer in terms of Pi

Mathematics

1 answer:

hodyreva [135]3 years ago

7 0

Answer:

I think it's 20 i'm not so sure if you get it wrong than i'm sorry

You might be interested in

A basketball has a diameter of 9.5 cm. Which of the expressions shows how to determine the volume of air the basketball can hold

Dahasolnce [82]

Question is Incomplete; Complete question is given below;

A basketball has a diameter of 9.5 cm. Which of the expressions shows how to determine the volume of air the basketball can hold?

A . 3/4π(4.75)3

B . 3/4π(9.5)3

C . 4/3π(4.75)3

D . 4/3π(9.5)3

Answer:

$C. \frac{4}{3}\pi(4.75)^3 \ cm^3$

Step-by-step explanation:

Given:

Diameter of basket ball = 9.5 cm

So radius is equal to half of the diameter.

radius $(r) = \frac{1}{2}\times 9.5 \ cm = 4.75 \ cm$

Now we need to find the volume of air in the basketball.

Since the shape of basketball is in spherical form hence we will apply formula of volume of Sphere.

Now Volume of air in the Basketball is equal to $\frac{4}{3}$ times π times cube of the radius.

framing in equation form we get;

Volume of air in the Basketball = $\frac{4}{3}\pi(4.75)^3 \ cm^3$

Hence the expression that shows Volume of air in the Basketball is $\frac{4}{3}\pi(4.75)^3 \ cm^3$

3 0

3 years ago

The diameter of holes for a cable harness is known to have a normal distribution with σ = 0.01 inches. A random sample of size 1

Rama09 [41]

Answer: (1.4964, 1.5126)

Step-by-step explanation:

We know that the confidence interval for population mean is given by :-

$\overline{x}\ \pm z*\dfrac{\sigma}{\sqrt{n}}$

, where ${\sigma$ = population standard deviation.

n= sample size

$\overline{x}$ = Sample mean

As per given , we have

σ = 0.01 inches

n= 10

$\overline{x}=1.5045$

Also, the critical value for 99% confidence interval = $z*=2.576$ [From x-value table.]

[Significance level =1-0.99=0.01 and $z_{\alpha/2}\ at\ \alpha=0.01$ is 2.576.]

Then, the 99% two-sided confidence interval on the mean hole diameter will be :-

$1.5045\ \pm (2.576)\dfrac{0.01}{\sqrt{10}}\\\\\approx1.5045\pm(2.576)(0.00316)=1.5045\pm0.00814016=(1.5045-0.00814016,\ 1.5045+0.00814016)\\\\=(1.49635984,\ 1.51264016)\approx(1.4964,\ 1.5126)$

Hence, the required confidence interval = (1.4964, 1.5126)

8 0

3 years ago

(2,5) and (3/2 ,2) find the slope of the line passing through the points.

larisa [96]

Answer:

Step-by-step explanation:

To find the slope 'm' we use 2 points from the line, those are given in the statement:

$x_{1} =2\\y_{1} =5\\\\x_{2} =3/2\\y_{2} =2$

$m=\frac{y_{2} -y_{1} }{x_{2}-x_{1}}$

$m=\frac{2 -5 }{3/2-2}}$

Finally m=6

4 0

3 years ago

(7,5), (r, 9), m= 6

Oksi-84 [34.3K]

Answer:

www,mathpapa.com

Step-by-step explanation:

3 0

3 years ago

Determine if converges or diverges. Show steps

Brut [27]

(3^x-2)/9^x=1/3^x-2/9^x
which converges by thereom
it converges to 10/72=5/36
id show work if i could but take my word,
if u cant solve it try working out a few partial sums

6 0

3 years ago