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Kay [80]
3 years ago
15

A spherical weather balloon is being inflated. The radius of the balloon is increasing at the rate of 9 cm/s. Express the surfac

e area of the balloon as a function of time t (in seconds). (Let S(0) = 0.)
Mathematics
1 answer:
Zolol [24]3 years ago
8 0
Since a sphere's surface area is 4πr², we then need to find r as a function of time t, which is 9t (since it increases by 9 every second)+0 (the initial value)=9t. Plugging it in, we get 4π(9t)²=4π*36t²=144πt²
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7 0
3 years ago
Read 2 more answers
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vampirchik [111]

Answer:

7.9

4.2

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Step-by-step explanation:

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6 0
3 years ago
Is y= x + 2 and y= -x + 3 perpendicular lines?
Vlad [161]
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8 0
4 years ago
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kobusy [5.1K]

Answer:

\boxed{x = 4}

Step-by-step explanation:

If ΔABC ~ ΔDEF

Then their sides must be proportional such that:

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Cross Multiplying

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4 0
4 years ago
Read 2 more answers
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