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3 years ago

7

Contestants in a dance a thon rest for the same amount of time evry hour.A couple rest for 25 mins in 5 hours. How long did they

rest in 8 hours

1 answer:

Shalnov [3]3 years ago

3 0

Same amount of time every hour is constant rate.
25 min / 5 hrs = 5 min per hour

8 hrs × 5 min per hr = 40 min rest

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Answer:

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Let the smaller integer be s; then s^2 = (s + 2) + 10.

Simplifying, s^2 - s - 2 - 10 = 0, or

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Solve this by factoring: (s - 4)(s + 3) = 0.

Then s = 4 and s = -3.

If the first even integer is 4, the next is 6. We omit s = -3 because it's not even.

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4^2 = (4 + 2) + 10 True or False?

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