All categories

3 years ago

Is anyone good with this? I need help finding the answer.

Mathematics

1 answer:

dybincka [34]3 years ago

3 0

To solve this problem, we have to find the perimeter of the shape.
we already know that two of the sides are 82m, all we need to do is find the circumference of the semicircles.
to find circumference, you multiply the diameter of a circle by pi. since we have two identical semicircles, we have one full circle. 66•3.14=207.24
207.24+82+82=371.24
the answer is 371.24m

You might be interested in

4/5w-12=2/3w<br> what is the step by step answer to those equation?

Mariulka [41]

Kulay, there is no such thing as a "step by step answer" here. You seem to want a "step by step solution."

I must assume that by 4/5 you actually meant (4/5) and that by 2/3 you meant (2/3). Then your equation becomes:

(4/5)w - 12 = (2/3)w.

The LCD here is 5*3, or 15, so mult. every term by 15:

12w - 180 = 10w.
Add 180 to both sides, obtaining 12 w - 180 + 180 = 10w + 180.

Then 12w = 10w + 180. Simplifying, 2w = 180. What is w?

4 0

3 years ago

Use spherical coordinates. evaluate (9 − x2 − y2) dv, where h is the solid hemisphere x2 + y2 + z2 ≤ 4, z ≥ 0.

avanturin [10]

In spherical coordinates, we have

$\begin{cases}x=\rho\cos\theta\sin\varphi\\y=\rho\sin\theta\sin\varphi\\z=\rho\cos\varphi\end{cases}$

which gives volume element

$\mathrm dV=\mathrm dx\,\mathrm dy\,\mathrm dz=\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\varphi\,\mathrm d\theta$

and so the triple integral is given by

$\displaystyle\iiint_H(9-x^2-y^2)\,\mathrm dV$
$=\displaystyle\int_{\theta=0}^{\theta=2\pi}\int_{\varphi=0}^{\varphi=\pi/2}\int_{\rho=0}^{\rho=2}(9-\rho^2\sin^2\varphi)\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\varphi\,\mathrm d\theta$
$=\displaystyle2\pi\int_{\varphi=0}^{\varphi=\pi/2}\int_{\rho=0}^{\rho=2}(9\rho^2\sin\varphi-\rho^4\sin^3\varphi)\,\mathrm d\rho\,\mathrm d\varphi$
$=\dfrac{592\pi}{15}$

4 0

3 years ago

What is 5 1/2 of 60%

EleoNora [17]

You mean 60%of 5 1/2? that makes more sense...

i would do it like this:

$\frac{60}{100}* 5\frac{1}{2}$

(60% is the same as $\frac{60}{100}$

$5\frac{1}{2}=\frac{11}{2}$

(so that there is no confusion, i've put it into an improper fraction

now we can multiply:
$\frac{60}{100}* \frac{11}{2}=$

$\frac{6}{10}* \frac{11}{2}=$

$\frac{3}{5}* \frac{1}{2}=$

$\frac{3*11}{10}=$

$\frac{33}{10}=$

which is 3.3.

so 60% of 5 and a half is 3.3.

6 0

3 years ago

a washer and a dryer cosr $873 combined. thenwasher cost$ $77 less than the dryer . what is the cost of the dryer.

Hitman42 [59]

Let the dryer cost x.

Then, the washer costs (x-77)

Together, they cost (x) + (x-77) = 873

2x-77 = 873 [subtract 77 from both sides]

2x = 796

x = 398

So the dryer costs $398

5 0

3 years ago

Two lawn mowing companies charge different rates depending on the number of acres the lawn covers. Answer the following question

natali 33 [55]

Answer:

it is too hard bro

Step-by-step explanation:

sry I can't give

5 0

2 years ago