document.write( "Question 1195704: The height of a water balloon that is launched across a field is modeled by the equation
\n" ); document.write( "h=-0.1x^2+ 2.4x+8.1 where h is the height in meters, and x is the horizontal distance from the
\n" ); document.write( "launch point. How far has the balloon traveled when it is 10 meters above the ground? \n" ); document.write( "
Algebra.Com's Answer #828161 by ikleyn(52803)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "To find the horizontal distance, solve the quadratic equation\r
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\n" ); document.write( "\n" ); document.write( "         -0.1x^2 + 2.4x + 1.8 = 10,\r
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\n" ); document.write( "\n" ); document.write( "which is in standard form\r
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\n" ); document.write( "         -0.1x^ + 2.4x - 8.2 = 0.\r
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\n" ); document.write( "\n" ); document.write( "Both roots are good: the smaller root is for ascending trajectory; the larger root for descending trajectory.
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