document.write( "Question 466050: The height of an object thrown upward from the floor of a canyon 106 feet deep with an initial velocity of 120 feet/second is given by the equation:
\n" ); document.write( "h=-16t2 + 120t - 106\r
\n" ); document.write( "\n" ); document.write( "How long will it take the object to rise to the height of the canyon wall? Round answer to the nearest hundreth. \n" ); document.write( "
Algebra.Com's Answer #319426 by stanbon(75887)\"\" \"About 
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The height of an object thrown upward from the floor of a canyon 106 feet deep with an initial velocity of 120 feet/second is given by the equation:
\n" ); document.write( "h=-16t2 + 120t - 106
\n" ); document.write( "How long will it take the object to rise to the height of the canyon wall? Round answer to the nearest hundreth.
\n" ); document.write( "----
\n" ); document.write( "solve -16t^2+120t - 106 = 106
\n" ); document.write( "----
\n" ); document.write( "-16t^2 + 120t -212 = 0
\n" ); document.write( "Divide thru by -4 to get:
\n" ); document.write( "4t^2 - 30t + 53 = 0
\n" ); document.write( "---
\n" ); document.write( "t = -b/(2a)
\n" ); document.write( "t = -120/(2*-16) = 3.75 seconds
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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