document.write( "Question 93157: formula for arc of a baseball h=-0.003x2(to 2nd power)+ 1.202x + 3.936\r
\n" ); document.write( "\n" ); document.write( "h-height of ball at distance from plate x If fence is 400ft from home plate and 8ft high, will the ball clear the fence to be a home run?\r
\n" ); document.write( "\n" ); document.write( "Thank You in Advance
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #67815 by bucky(2189)\"\" \"About 
You can put this solution on YOUR website!
Given:
\n" ); document.write( ".
\n" ); document.write( "\"h+=+-0.0032x%5E2+%2B1.202x+%2B+3.936\"
\n" ); document.write( ".
\n" ); document.write( "This equation gives the height of the ball when the ball is x feet from home plate.
\n" ); document.write( ".
\n" ); document.write( "So when x is 400 feet (the distance from home plate to the fence) the height of the ball
\n" ); document.write( "is found by substituting 400 for x to get:
\n" ); document.write( ".
\n" ); document.write( "\"h+=+-0.0032%28400%5E2%29+%2B+1.202%28400%29+%2B+3.936\"
\n" ); document.write( ".
\n" ); document.write( "The rest is just calculator work. Note that \"400%5E2+=+160000\" and if you substitute
\n" ); document.write( "that the equation is:
\n" ); document.write( ".
\n" ); document.write( "\"h+=+-0.0032%28160000%29+%2B+1.202%28400%29+%2B+3.936\"
\n" ); document.write( ".
\n" ); document.write( "Do the two multiplications on the right side and you get:
\n" ); document.write( ".
\n" ); document.write( "\"h+=+-512+%2B+480.8+%2B3.936\"
\n" ); document.write( ".
\n" ); document.write( "Then do the additions on the right side and the answer is:
\n" ); document.write( ".
\n" ); document.write( "\"h+=+-27.264\"
\n" ); document.write( ".
\n" ); document.write( "How do you interpret this negative answer? The answer is that the ball hits the ground
\n" ); document.write( "even before it reaches the wall. In fact, if the ground did not stop it, the ball would
\n" ); document.write( "be 27.264 feet below ground level when it reached the 400 feet length to the wall.
\n" ); document.write( ".
\n" ); document.write( "So that’s the answer … the ball doesn’t even come close to clearing the wall. If you
\n" ); document.write( "want to know how far from the plate the ball hits the ground, you can use the given
\n" ); document.write( "equation to find the distance. Set h = 0 and solve for x. Since this isn’t part of the problem,
\n" ); document.write( "you can try it and see if you can solve the equation for x. The answer is you should get is
\n" ); document.write( "378.87 feet. So the ball falls more than 21 feet short of even reaching the fence, and it
\n" ); document.write( "isn’t even close to clearing the 8 foot fence.
\n" ); document.write( ".
\n" ); document.write( "Hope this helps you to understand the problem.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );