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wel
3 years ago
15

A stone is dropped into some water and a circle of radius r is formed and slowly expands. The perimeter of the circle is increas

ing at 3 m/ s. At the moment the radius is exactly 2m, what rate is the radius of the circle increasing?
Mathematics
2 answers:
Mazyrski [523]3 years ago
3 0
I believe it would be 6 due to the radius being a half of the actual circumfrence
zimovet [89]3 years ago
3 0
The relation between perimeter and radius  is P = 2 pi r

dP/dr = 2pi

dP/dt = 3  

when r = 2   dr/dt  = dP/dt * dr/DP =  3 * 1/2pi  = 0.477  m/s
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Answer:

6.375 x 10^3

Step-by-step explanation:

Topic: Numbers / Conversion to Standard Form

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3 0
3 years ago
2. Two puppies together weigh 22 kilograms 300 grams. If one
monitta

Answer:

B = 12800 grams or 12kg 800 grams.

Step-by-step explanation:

Let the two puppies be A and B respectively.

Translating the word problem into an algebraic expression, we have;

A + B = 22kg 300g

A = 9kg 500g

Conversion;

1 Kilograms = 1000 grams.

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6 0
2 years ago
Find the indicated sum for each sequence. S9 of –9, 36, –144, 576, ...
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Thus, the 9th term would be equal to:

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3 years ago
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3 years ago
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IceJOKER [234]
To determine the probability that there will be no women, you need to find the probability of women and subtract it from the total

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6 0
3 years ago
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