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anonymous
 5 years ago
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 20 mph?
anonymous
 5 years ago
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 20 mph?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[20 = 2 \sqrt{5L}\]\[10 = \sqrt {5L}\]\[10^{2} = 5L\]\[L = 100/5 = 20\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So how many feet is it? 100/5?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0transform 20 mi into feet 20 mi = 105 600 feet

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay, what do i do next?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0105 600 feet is my answer?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0a car that has left skid marks of length L, in feet. How far will a car skid at 20 mph? > 20 mi = 105 600 feet
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