Answer:
A
Step-by-step explanation:
68 miles / hour
Average speed = distance / time
distance = 170 and time = 5/2 ( as an improper fraction)
speed = 170 ÷
= 170 ×
=
= 68
1 : the perimeter of a circle The circle measures 22 inches in circumference. 2 : the external boundary or surface of a figure or object : periphery from the center to the circumference of the sphere.