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sineoko [7]
3 years ago
7

It takes Caroline 1/5 of an hour to walk a mile. Four of Caroline's friends time themselves on their own walks of different leng

ths.
*David: walked 1/2 of a mile in 2/5 of an hour

*Jeanette: walked 1/2 of a mile in 1/10 of an hour

*Kay: walked 1/5 of a mile in 12 of an hour

*Mark: walked 1/3 of a mile in 3/5 of an hour

Which friend is walking at the same rate as Caroline?

A.David

B.Jeanette

C.Kay

D.Mark
Mathematics
1 answer:
Alexus [3.1K]3 years ago
4 0

Answer:

Jeanette

Step-by-step explanation:

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3 years ago
Does anybody know the answer to these questions?
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Answer:

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Step-by-step explanation:

You should be aware that the SI derived units of Joules are equivalent to kg·m²/s².

To reduce confusion between <em>m</em> for mass and m for meters, we'll use an <em>italic m</em> for mass.

In each case, the "find" variable is what's left after we put the numbers into the formula. It is what the question is asking for. The "given" values are the ones in the problem statement and are the values we put into the formula. The formula is the same in every case.

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1. KE = (1/2)<em>m</em>v² = (1/2)(2000 kg)(25 m/s)² = 625,000 kg·m²/s² = 625,000 J

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2. KE = (1/2)<em>m</em>v² = (1/2)(0.5 kg)(20 m/s)² = 100 kg·m²/s² = 100 J

__

4. KE = (1/2)<em>m</em>v²

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__

5. KE = (1/2)<em>m</em>v²

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  v = √5 m/s ≈ 2.236 m/s

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Step-by-step explanation:

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4 years ago
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Jony is 2 now and is 2x older than Chika.  So Chika is 1 year old.  This means Chika is 1 year younger than Jony.  When Jony is 30, Chika is 29

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