document.write( "Question 139635: HELP NO clue how to do this!\r
\n" ); document.write( "\n" ); document.write( "An eagle is circling a field at a height of 250 feet sees a snake below. The eagle dives at an initial speed of 110 feet per second. Determine the time the snake has to escape. \n" ); document.write( "
Algebra.Com's Answer #101807 by stanbon(75887)\"\" \"About 
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An eagle is circling a field at a height of 250 feet sees a snake below. The eagle dives at an initial speed of 110 feet per second. Determine the time the snake has to escape.
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\n" ); document.write( "Let h(t) be height at time \"t\".
\n" ); document.write( "EQUATION:
\n" ); document.write( "h(t) = -16t^2-110t+ 250
\n" ); document.write( "When the eagle hits the snake its height is zero.
\n" ); document.write( "-16t^2-110t+250 = 0
\n" ); document.write( "-2(8t^2+55t-125) = 0
\n" ); document.write( "t = [-55 +- sqrt(55^2 - 4*8*-125)]/16
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\n" ); document.write( "t = [-55 +- sqrt(7025)]/16
\n" ); document.write( "t = [-55 +- 83.82]
\n" ); document.write( "Positive answer:
\n" ); document.write( "t = (-55+83.83)/16
\n" ); document.write( "t = 1.8 seconds
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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