SOLUTION: I have the answer to this problem, however, I need to know how the formula is calculated. Please advise and thank you! Find the rate of speed of a car that left a 150 feet skid

Question 260094: I have the answer to this problem, however, I need to know how the formula is calculated. Please advise and thank you!
Find the rate of speed of a car that left a 150 feet skid mark. Round to the nearest whole number and solve the formula for L.
r=2√5*L
r=55 and L=150
55=2√5(150)

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Find the rate of speed of a car that left a 150 feet skid mark. Round to the nearest whole number and solve the formula for L.
r=2√5*L
---
L = r/(2sqrt(5)
L = 150/(2sqrt(5)
L = 75/sqrt(5
L = 75*sqrt(5)/5
L = 15*(sqrt(5))
L is approximately 33 mph
================================
Cheers,
Stan H.
RELATED QUESTIONS
I need help please in evaluating this problem. ∣-9 ∣ - ∣-4 ∣.... (answered by jim_thompson5910)

I need help please with this problem. I need to find the missing length for this right... (answered by rfer,Alan3354)

If (3/4-2/3)+(1/2+2/3)is calculated and the answer reduced to simplest terms, what is the (answered by Fombitz)

I need to know how to calculate a mixture formula. I have a 5-gallon premixed solution... (answered by ankor@dixie-net.com)

Find x so the distance between (x, 2)and (3, 3) is sgrt 5. I know that you need to use (answered by Alan3354)

I need to evaluate this problem. ∣-27 + 14 ∣. My answer was 13. Is this... (answered by kela1616,Alan3354)

I need to add thhis problem. 7 + (-9) + (-5) +6. My answer was -1. Is this correct?... (answered by jim_thompson5910)

Hello! I have a question concerning the following problem. I know your supposed to use... (answered by longjonsilver)

I need to know the steps to find x and y on paper. I know how to plug these into a... (answered by solver91311)