document.write( "Question 442619: Hi,\r
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document.write( "I have an algebra question that states the following: (not sure where to go with this)\r
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document.write( "If h = -16t^2 + 48t represents the height of a rocket, in feet, t seconds after it was fired, when will the rocket hit the ground?\r
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document.write( "It does give a hint: \"The rocket is on the ground when h = 0\"\r
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document.write( "So it states that the rocket will hit the ground after _______ second(s).
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Algebra.Com's Answer #305317 by mananth(16946)![]() ![]() You can put this solution on YOUR website! At t=0, h=0, it is on ground before firing\r \n" ); document.write( "\n" ); document.write( "h=-16t^2+48 \n" ); document.write( "h =0 when it hits the ground after firing\r \n" ); document.write( "\n" ); document.write( "-16t^2+48=0 \n" ); document.write( "16t(-t+3)=0 \n" ); document.write( "/16 \n" ); document.write( "t(-t+3)=0\r \n" ); document.write( "\n" ); document.write( "t= 0 OR t=3\r \n" ); document.write( "\n" ); document.write( "It will hit after 3 seconds\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |