document.write( "Question 714629: The height in meters of a ball released from a ramp is given by the function h(t) = -4.9t^2 + 29.4t + 34.3, where t represents the time in seconds since the ball was released from the end of the ramp. Determine the time interval that the ball is above 50m. \r
\n" ); document.write( "\n" ); document.write( "What I have tried: -4.9t^2 + 29.4t + 34.3 +50 = 0\r
\n" ); document.write( "\n" ); document.write( "then I plug it into the quadratic formula but I keep getting really large decimals.
\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #438922 by ankor@dixie-net.com(22740)\"\" \"About 
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The height in meters of a ball released from a ramp is given by the function h(t) = -4.9t^2 + 29.4t + 34.3, where t represents the time in seconds since the ball was released from the end of the ramp. Determine the time interval that the ball is above 50m.
\n" ); document.write( "What I have tried: -4.9t^2 + 29.4t + 34.3 +50 = 0
\n" ); document.write( ":
\n" ); document.write( "-4.9t^2 + 29.4t + 34.3 = 50
\n" ); document.write( "so you should have
\n" ); document.write( "-4.9t^2 + 29.4t + 34.3 - 50 = 0
\n" ); document.write( "-4.9t^2 + 29.4t - 15.5 = 0
\n" ); document.write( "The ball will be above 50 m between the two x intercept solutions
\n" ); document.write( "I got:
\n" ); document.write( "x ~ 5.416 - .584 ~ 4.8 sec above 50 m \n" ); document.write( "
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