If a car travels 60 miles at 30 miles per hour and then 60 miles an hour, what was the car's average speed for the total trip?

step-by-step explanation:

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,