Question

Help w/Word Prob: LAW ENFORCEMENT A police accident investigator can use the formula s=2√5l to estimate the speed=s of a car in miles per hour based on the length=l in feet of the skid marks it left. How fast was a car traveling that left skid marks 120 feet long?

Answer 1

s(L)=2√(5L)
Substitute L=120 in above equation to get:
s(120)=2√(5(120))
=2√(600)
=2*24.5
=49 mph

Answer 2

I can See It!!! I was multiplying 600 & 2 together... Thanks :)

Answer 3

You're welcome!