Question

The distance required to stop a car varies directly as the

square of its speed. If 250 feet are required to stop a car traveling

60 miles per hour, how many feet are required to stop a car

traveling 96 miles per hour?​

Answer 1

250/(60)^2 = x/(96^2)

or

x = 640

Answer 2

Answer:

If O is the point in the exterior of∆ABC, show that

2(OA+OB+OC)>(AB+BC+CA).