document.write( "Question 709336: A graphing iron is thrown vertically to catch on a ledge 7.5 metres above the thrower. It`s height is give in meters and time in seconds. After being thrown the equation is given by h= -4.9t?2+11t+1.5. Will the graphing iron reach the ledge?\r
\n" ); document.write( "\n" ); document.write( "Can you please help me? Thank you so much in advance:) \n" ); document.write( "
Algebra.Com's Answer #436537 by ankor@dixie-net.com(22740)\"\" \"About 
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A graphing iron is thrown vertically to catch on a ledge 7.5 metres above the thrower.
\n" ); document.write( "It`s height is give in meters and time in seconds.
\n" ); document.write( " After being thrown the equation is given by h= -4.9t?2+11t+1.5.
\n" ); document.write( " Will the graphing iron reach the ledge?
\n" ); document.write( ":
\n" ); document.write( "A Graphing Iron? Perhaps you mean a grappling iron, anyway this is a quadratic equation, find the axis of symmetry, then the max height
\n" ); document.write( "x = -b/(2a) is the formula for the axis of symmetry
\n" ); document.write( "t = -11/(2*-4.9)
\n" ); document.write( "t = -11/-9.8
\n" ); document.write( "t = 1.12245 sec to reach max height
\n" ); document.write( ":
\n" ); document.write( "Find Max height
\n" ); document.write( "h = -4.9(1.12245^2) + 11(1.12245) + 1.5
\n" ); document.write( "h = -6.17347 + 12.347 + 1.5
\n" ); document.write( "h ~ 7.67 meters is max height, it should just make it. \n" ); document.write( "
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