A marathon runner runs 4 miles in 20 minutes. In terms of miles per hour, how fast is she running?

12 miles per hour

Step-by-step explanation:

4 miles in 20 minutes is equivalent to 4*3=12 miles in 20*3=60 minutes, or 12 miles per hour.

step-by-step explanation:

1. the cylinder is a. 54

2.   a.108 /

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