document.write( "Question 268745: victor threw a baseball into the air that modeled the equation h=-16t+36t+1,where h is the height in feet and t is the time in seconds.How long was the ball in the air if casey caught the ball 9 feet above the ground on its way down? \n" ); document.write( "
Algebra.Com's Answer #197203 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! victor threw a baseball into the air that modeled the equation h=-16t+36t+1,where h is the height in feet and t is the time in seconds.How long was the ball in the air if casey caught the ball 9 feet above the ground on its way down? \n" ); document.write( ": \n" ); document.write( "-16t^2 + 36t + 1 = 9 \n" ); document.write( ": \n" ); document.write( "-16t^2 + 36t + 1 - 9 = 0 \n" ); document.write( ": \n" ); document.write( "-16t^2 + 36t - 8 = 0 \n" ); document.write( "Simplify, change the signs, divide by -4 \n" ); document.write( "4t^2 - 9t + 2 = 0 \n" ); document.write( "Factors to \n" ); document.write( "(4t - 1)(t - 2) = 0 \n" ); document.write( "Two solutions \n" ); document.write( "4t = 1 \n" ); document.write( "t = \n" ); document.write( "and \n" ); document.write( "t = 2 sec; ball is caught at 9 ft \n" ); document.write( " |