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2 years ago

10

Sarah estimated that 230 people will attend the concert but 300 people attended. What was the percent change? Round to the neare

st tenth.

1 answer:

stiks02 [169]2 years ago

4 0

It 23/30 i think id you simplify it

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A spherical balloon is inflating with helium at a rate of 64 pi StartFraction ft cubed Over min EndFraction . How fast is the b

olga2289 [7]

Answer:

The radius of the balloon is increasing at a rate of 4 feet per minute.

Step-by-step explanation:

We are given the following in the question:

$\dfrac{dV}{dt} = 64\pi \dfrac{\text{ ft}^3}{\text{min}}$

Volume of sphere is given by

$V = \dfrac{4}{3}\pi r^3$

where r is the radius of the balloon.

Instant radius, r = 2 ft

Rate of change of volume =

$\dfrac{dV}{dt} = \dfrac{d}{dt}(\dfrac{4}{3}\pi r^3)\\\\\dfrac{dV}{dt} =4\pi r^2\dfrac{dr}{dt}$

Putting values, we get,

$64\pi = 4\pi (2)^2\dfrac{dr}{dt}\\\\\Rightarrow \dfrac{dr}{dt} = 4$

Thus, the radius of the balloon is increasing at a rate of 4 feet per minute.

5 0

3 years ago

Answer to this please! Thank you :))))

kodGreya [7K]

Answer:

62

Step-by-step explanation:

180-56=124

124/2= 62

62+62+56=180

6 0

2 years ago

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Any help would be great . Thank you!

vladimir1956 [14]

X = 4 and Y = 9. I did a complicated way of doing it so if u copy it it would look weird

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2 years ago

This true or false????????? ill give brainliest if right

stiv31 [10]

Answer:

This is false.

Step-by-step explanation:

Hope this helps!!

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Zolox worked 38 hours last week. He had $88 deducted from his earnings for taxes. If he had $273 left after the deduction, how m

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273+88=361
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Zolox made $9.50 per hour

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