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Alecsey [184]
2 years ago
7

Please show me the work!

Mathematics
1 answer:
Papessa [141]2 years ago
6 0

Answer:

9/2π cm/s

Step-by-step explanation:

Volume of the spherical balloon V= 4/3πr³

Rate of change of volume dV/dt = dV/dr * dr/dt

dV/dr = 3(4/3πr²)

dV/dr = 4πr²

dV/dr = 4π(2)²

dV/dr = 16π

If V = 72cm²/s

72 = 16π*dr/dt

dr/dt = 72/16π

dr/dt = 9/2π cm/s

Hence the radius is changing at  9/2π cm/s

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90 dollars ratio in 1:2:3
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3:6:9

Step-by-step explanation:

1/1+2+3 × 90 = 15

2/1+2+3 × 90 = 30

3/1+2+3 × 90 = 45

8 0
2 years ago
David burns 220 calories riding her bike each hour. He wants to burn 550 calories riding his bike at the same rate. what answer
JulijaS [17]

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3 years ago
Write a sentence representing the equation x+56/7=11
Anastasy [175]
Hey there! :D

x+56/7=11

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I hope this helps!
~kaikers
8 0
3 years ago
HELPP ASAP
elena55 [62]

Answer:

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7 0
2 years ago
Dale and sharon mahnke have decided to fence off the garden plot behind their​ house, using their house as a​ "fence" along one
kkurt [141]

The length l is given as:

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So the length l is:

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<span>The dimensions are 12 ft x 9 ft</span>

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