document.write( "Question 1197419: a ball is thrown across a playing field. it’s path is by the equation y=-0.005x^2 +x+5 where x is the distance the ball has traveled horizontally. and y is it’s height above ground level, both measured in feet. what is the maximum height attained by the ball? how far has it traveled horizontally when it hits the ground \n" ); document.write( "

Algebra.Com's Answer #830688 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "y=-0.005x^2 +x+5  (max at x = 100) y' = 0 ⇒ -.01x + 1 = 0 , x = 100\r\n" );
document.write( "maximum P(100,55)\r\n" );
document.write( "what is the maximum height attained by the ball? \r\n" );
document.write( "Can see from graph travels 'approximately' from -5 to 205 0r  ~210ft \r\n" );
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document.write( "Recommend using a Graphing software as a visual aid and calculator\r\n" );
document.write( "FREE graphing software is available at http://www.padowan.dk.com\r\n" );
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document.write( "Below a screenshot of y=-0.005x^2 +x+5  using that software:\r\n" );
document.write( "Using its 'evaluate' feature can also give a closer approximation to x-intercepts\r\n" );
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