document.write( "Question 763740: please help solve this problem h(t) = -16t2 + 64t + 160 Find the times when the rocket will be 40 feet from the ground \n" ); document.write( "

Algebra.Com's Answer #464978 by Tatiana_Stebko(1539) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"-16t%5E2+%2B+64t+%2B+160=40\"$
\n" ); document.write( " $\"-16t%5E2+%2B+64t+%2B+120=0\"$ divide by $\"-8\"$
\n" ); document.write( " $\"2t%5E2+-8t+-+15=0\"$
\n" ); document.write( " $\"t=%28-%28-8%29%2B-sqrt%288%5E2-4%2A2%2A%28-15%29%29%29%2F%282%2A2%29\"$
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\n" ); document.write( " $\"t=5.391\"$ sec \n" ); document.write( "

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