document.write( "Question 143329: An astronaut on the moon tosses a ball upwards; by how much will the height of the ball exceed 100 feet if the ball's heights follows:\r
\n" ); document.write( "\n" ); document.write( "h(t) = -2.6t^2 + 32.lt + 5.5\r
\n" ); document.write( "\n" ); document.write( "a. 0.1 feet
\n" ); document.write( "b. 5.6 feet
\n" ); document.write( "c. 105.6 feet
\n" ); document.write( "d. The ball never exceeds the 100-foot mark
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Algebra.Com's Answer #104310 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
An astronaut on the moon tosses a ball upwards; by how much will the height of the ball exceed 100 feet if the ball's heights follows:
\n" ); document.write( "h(t) = -2.6t^2 + 32.lt + 5.5
\n" ); document.write( "a. 0.1 feet
\n" ); document.write( "b. 5.6 feet
\n" ); document.write( "c. 105.6 feet
\n" ); document.write( "d. The ball never exceeds the 100-foot mark
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\n" ); document.write( "maximum height occurs when t = -b/2a = -32.1/(2*-2.6) = 6.173077 seconds
\n" ); document.write( "The height at that time is h(6.173077) = 104.58 ft
\n" ); document.write( "-------
\n" ); document.write( "The correct answer is 4.58 ft
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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