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2 years ago

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HELP FAST FAST FAST FAST PLS ILL LOVE YOU FORVER. Greta is putting a 20 foot fence around her pool. She uses all the border to m

ake four sections that are the same length. Which expression does NOT equal the length of one of these sections in feet?

1 answer:

dezoksy [38]2 years ago

8 0

Answer:

20 over 4 llllllllll<em /><em />

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I need 33. B) find the exact time when the radius reaches 10 inches<br><br> 100 points! Plz help

stealth61 [152]

Step-by-step explanation:

You have found a function r(V(t)). We can see that this function is a one variable function. The variable is time.

So in this specific function we can call r(v(t)), r(t).

So:

$r(t) = \sqrt[3]{ \frac{3 \times (10 + 20t)}{4\pi} }$

If α is the moment that the radius is 10 inches and since the function above gives radius in inches we have to solve the equation:

$r( \alpha ) = 10$

Which is the same as:

$\sqrt[3]{ \frac{3 \times (10 + 20 \alpha )}{4\pi} } = 10 \\ \frac{3 \times (10 + 20 \alpha )}{4\pi} = 1000 \\ (10 + 20 \alpha ) = \frac{4000\pi}{3} \\ 20 \alpha = \frac{(4000\pi - 30)}{3} \\ \alpha = \frac{(4000\pi - 30)}{60}$

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2 years ago

What’s the value of x?

GaryK [48]

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3 years ago

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postnew [5]

Answer:

Step-by-step explanation:

abc=80, abm= 100

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3 years ago

Read 2 more answers

Find the volume of the solid of revolution formed by rotating the bounded region about the x-axis.

monitta

Answer:

27.11514 pi

Step-by-step explanation:

Given is a function exponential as

$f(x) = e^{-x}$

The region bounded by the above curve, y =0 , x=-2 x =1 is rotated about x axis.

The limits for x are -2 and 1

The volume when rotated through x axis is found by

$\pi\int\limits^b_a {f(x)^2} \, dx$

Here a = -2 and b =1

volume = $\pi\int\limits^1_(-2) {(e^-x)^2} \, dx$

= $\pi (\frac{e^{-2x} }{-2} )\\= \frac{\pi}{2} (-e^1+e^4)\\= 27.11514 \pi$

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3 years ago

I need help on this I'm confused?!?

PtichkaEL [24]

Hi Im A senior in high school are you sure you did this question right? it seems to make no sense. if you wrote it wrong please fix it and i can help you.

Thank you for posting your answer on brainly have a blessed day

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3 years ago