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If you go along the hypotenuse at a constant speed rate of 2

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by Max@Math Revolution » Mon Feb 22, 2016 5:26 pm
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If you go along the hypotenuse at a constant speed rate of 2 miles per hour, how many hours it does it take if you to go along the hypotenuse?

A. 8 hrs
B. 8.5 hrs
C. 9 hrs
D. 9.5 hrs
E. 10 hrs


* A solution will be posted in two days.
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by shona04 » Tue Feb 23, 2016 12:51 am
calculating the hypotenuse gives 2 sqrt 65 and so the time needed to travel with 2 miles/ hour would be 8 hours.
am I right....
OA and explanation pls
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by Max@Math Revolution » Wed Feb 24, 2016 9:07 pm
If you go along the hypotenuse at a constant speed rate of 2 miles per hour, how many hours it does it take if you to go along the hypotenuse?

A. 8 hrs
B. 8.5 hrs
C. 9 hrs
D. 9.5 hrs
E. 10 hrs


-> 12^2+16^2=d^2, which means 20 miles. If you go at a speed rate of 2 miles per hour, it takes 10 hours.
Thus, E is the answer.
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