document.write( "Question 218148: The formula r = 2(sqrt of 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 going 50 miles per hour? \n" ); document.write( "
Algebra.Com's Answer #164368 by RAY100(1637)![]() ![]() ![]() You can put this solution on YOUR website! r= 2*sqrt(5L) \n" ); document.write( ". \n" ); document.write( "for r=50 \n" ); document.write( ". \n" ); document.write( "50 =2*sqrt(5L) \n" ); document.write( ". \n" ); document.write( "25= sqrt(5L),,,,square both sides \n" ); document.write( ". \n" ); document.write( "625 = 5L \n" ); document.write( ". \n" ); document.write( "125 ft = L \n" ); document.write( ". \n" ); document.write( "check,,,r= 2*sqrt(5*125) = 2*sqrt625 = 2*25 =50,,,,,ok \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( " |