document.write( "Question 1016531: benjamin threw a rock straight up from a cliff that was 24 ft above the water. If the height of the rock h, in feet, after t seconds is given by the equation h= -16t^2 +20t+24, how long will it take for the rock to hit the water \n" ); document.write( "

Algebra.Com's Answer #632912 by ikleyn(52778) $\"\"$ $\"About$

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\n" ); document.write( "benjamin threw a rock straight up from a cliff that was 24 ft above the water. If the height of the rock h, in feet, after t seconds is given by the equation h= -16t^2 +20t+24, how long will it take for the rock to hit the water
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document.write( "Solve the quadratic equation for t\r\n" );
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document.write( " = .\r\n" );
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document.write( "and you will know how long will it take for the rock to hit the water.\r\n" );
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