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Mathematics 75 Online
OpenStudy (anonymous):

After an accident, police can estimate the speed that a car was traveling by measuring its skid marks. The formula r=2√5L can be used, where r is the speed, in miles per hour, and L is the length of the skid marks, in feet. Estimate the speed of a car that left skid marks 160 ft long.

OpenStudy (anonymous):

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