document.write( "Question 1181972: A soccer ball is kicked in the air from the stadium. The height, h, in feet, of the ball can be modeled by the equation h = -16t2 + 34t + 15 where t is the time in seconds. When will the ball hit the ground? \n" ); document.write( "
Algebra.Com's Answer #811927 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( " \"h+=+-16t%5E2+%2B+34t+%2B+15++\"\r
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\n" ); document.write( "\n" ); document.write( "the ball will hit the ground when \"h=0\"\r
\n" ); document.write( "\n" ); document.write( "\"0=+-16t%5E2+%2B+34t+%2B+15++\"....factor\r
\n" ); document.write( "\n" ); document.write( "\"0=+-%2816t%5E2+-34t+-+15%29++\"\r
\n" ); document.write( "\n" ); document.write( "\"0=+-%2816t%5E2+%2B6t-40t+-+15%29++\"\r
\n" ); document.write( "\n" ); document.write( "\"0=+-%28%2816t%5E2+%2B6t%29-%2840t%2B15%29%29++\"\r
\n" ); document.write( "\n" ); document.write( "\"0=+-%282t%288t+%2B3%29-5%288t%2B3%29%29++\"\r
\n" ); document.write( "\n" ); document.write( "\"0+=+-%282t+-+5%29+%288t+%2B+3%29+\"\r
\n" ); document.write( "\n" ); document.write( "solutions:\r
\n" ); document.write( "\n" ); document.write( "if \"0+=+-%282t+-+5%29++\"=>\"2t+=5++\"=>\"t+=2.5++\"
\n" ); document.write( "if \"0+=++8t+%2B+3+\"=>\"+8t=-3+\"=>\"+t=-3%2F8+\"-> disregard negative time\r
\n" ); document.write( "\n" ); document.write( "the ball will hit the ground after \"2.5++\" seconds\r
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