document.write( "Question 1125638: H(t)=-4.9t^2+68.6t the function above gives the height of a model rocket,in meters,t seconds after it is launched from ground level.What is the maximum height,to the nearest meter,attained by the model? \n" ); document.write( "
Algebra.Com's Answer #741961 by josgarithmetic(39617)\"\" \"About 
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\"H%28t%29=-4.9t%5E2%2B68.6t\"\r
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\n" ); document.write( "\n" ); document.write( "\"-9.8t%2B68.6=0\"\r
\n" ); document.write( "\n" ); document.write( "\"9.8t=68.6\"\r
\n" ); document.write( "\n" ); document.write( "\"t=7\"\r
\n" ); document.write( "\n" ); document.write( "-\r
\n" ); document.write( "\n" ); document.write( "\"H%287%29=-4.9%2A7%2B68.6%2A7\"\r
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\n" ); document.write( "\n" ); document.write( "446
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