document.write( "Question 339685: Hello' The stopping distance d of a car after the brakes are applied varies directly as the square speed r? if a car traveling 70 mph can stop in 270 feet how many feet will it take the same car to stop when it is traveling 80 mph? Thank you \n" ); document.write( "
Algebra.Com's Answer #243345 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 70^2/270=80^2/X \n" ); document.write( "4,900/270=6,400/X CROSS MULTIPLY. \n" ); document.write( "4,900X=270*6,400 \n" ); document.write( "4,900X=1,728,000 \n" ); document.write( "X=1.728,000/4,900 \n" ); document.write( "X=352.653 FT. ANS. \n" ); document.write( " \n" ); document.write( " |