document.write( "Question 864481: A missile fired straight up into the air has a height, in meters, given by h = -5 t^2 + 40 t, where t is the time, in seconds, the missile has been in the air. \r
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document.write( "By setting up and solving an equation, find the time when the missile hits the ground. \n" );
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Algebra.Com's Answer #521465 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! 0 = -5t^2 + 40t \n" ); document.write( "5t^2=40t \n" ); document.write( "t=8 \n" ); document.write( "t=0 \n" ); document.write( "h=0 at t=0 and at t=8 \n" ); document.write( " \n" ); document.write( " |