SOLUTION: The formula r = 2sqrt 5L can be used to approximate the speed r, in miles per hour of a car that has left skid marks of length L, in feet. How far will a car skid at 60 mph? The c

Algebra ->  Radicals -> SOLUTION: The formula r = 2sqrt 5L can be used to approximate the speed r, in miles per hour of a car that has left skid marks of length L, in feet. How far will a car skid at 60 mph? The c      Log On


   



Question 467477: The formula r = 2sqrt 5L can be used to approximate the speed r, in miles per hour of a car that has left skid marks of length L, in feet. How far will a car skid at 60 mph?
The car will skid _____ feet.

Answer by kelsiesmurf(9) About Me  (Show Source):
You can put this solution on YOUR website!
The formula r = 2sqrt 5L can be used to approximate the speed r, in miles per hour of a car that has left skid marks of length L, in feet. How far will a car skid at 60 mph?
The car will skid _____ feet.
60=2sqrt%285L%29 divide both sides by 2
30=sqrt%285L%29 square both sides
900=5L divide both sides by 5
180=L
To check:
2sqrt%285%2A180%29
2sqrt%28900%29
2%2A30
60