Aworld-class marathon runner can finish 26.2 miles in 2 hours. what is the rate of speed for the runner?

That runner would be moving at exactly 13.1 miles per hour.

Step-by-step explanation:

In order to find that, you take the number of miles and divide it by the number of hours. This will give you the unit rate.

26.2 miles/2 hours = 13.1 mph

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .