From a point on a straight road, pablo and elena ride bicycles in the same direction. pablo rides at 9 mph and elena rides at 13 mph. in how many hours will they be 38 mi apart? pablo and elena will be 38 miles apart in hrs. (type an integer or a simplified fraction.)

  Pablo and Elena will be 38 miles apart in 19/2 hrs.

Step-by-step explanation:

Their separation speed is 13 mph - 9 mph = 4 mph. Using the relation ...

  time = distance/speed

we can find the time from ...

  time = (38 mi)/(4 mi/h) = 38/4 h = 19/2 h

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step-by-step explanation:

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7. d. 64

8. i. 32

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