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natima [27]
3 years ago
6

Andy had a snowball (a perfect sphere) with a radius of

Mathematics
2 answers:
gtnhenbr [62]3 years ago
5 0

Answer:

The ratio of the current volume to the original one is 2.28

Step-by-step explanation:

Since the radius of the ball increased at a rate of 0.25 cm/s and Andy spent 4 seconds making it bigger, then the ball's radius increased by 4*0.25 = 1 cm. The volume of a sphere is given by:

volume = (4/3)*pi*r³

The original volume of the ball was:

volume1 = (4/3)*3.14*(3)³ = (12.56/3)*27 = 12.56*9 = 113.04 cm³

The final volume of the ball was:

volume2 = (4/3)*3.14*(3 + 1)³ = (12.56/3)*(4)³ = (12.56/3)*64 = 257.95 cm³

The ratio of the current volume of the ball to the original one is:

ratio = volume2/volume1 = 257.95/113.04 = 2.28

Ivan3 years ago
3 0

Answer:

the correct answer is 64/27

Step-by-step explanation:

i took the test :)

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9 + 5 + 4 + 7 = 25

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3 0
3 years ago
Suppose that a recent article stated that the mean time spent in jail by a first-time convicted burglar is 2.5 years. A study wa
Sladkaya [172]

Answer:

The null hypothesis is H_0: \mu = 2.5.

The alternative hypothesis is H_1: \mu > 2.5

Step-by-step explanation:

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At the null hypothesis, we test if the mean is of 2.5 years, that is:

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8 0
3 years ago
The base of the parallelogram, b, can be found by dividing the area by the height.
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The area of a parallelogram is:
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7 0
3 years ago
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Step-by-step explanation:

Nachelle goes out to lunch. The bill, before tax and tip, was $8.10. A sales tax of 4% was added on. Nachelle tipped 17% on the amount after the sales tax was added. How much was the sales tax? Round to the nearest cent.

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poizon [28]

Answer:

I CAN!

Step-by-step explanation:

First, where does the line start?

y=1

It looks like it goes up, and then right each one unit. No?

So that would be

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Warning! DO NOT say y=2.  That is no good. You probably want to simplify it, but dont. Okay?

Happy to help

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6 0
3 years ago
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