document.write( "Question 983278: S=ut+1/2at^2. Use this formula to find t when s=6 u=11 a=4 \n" ); document.write( "

Algebra.Com's Answer #604080 by Cromlix(4381) $\"\"$ $\"About$

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Hi there,
\n" ); document.write( "S = ut + 1/2at^2
\n" ); document.write( "6 = 11t + 1/2*4t^2
\n" ); document.write( "6 = 11t + 2t^2
\n" ); document.write( "Rearrange into quadratic
\n" ); document.write( "2t^2 + 11t - 6 = 0
\n" ); document.write( "(2t - 1)(t + 6) = 0
\n" ); document.write( "t + 6 = 0
\n" ); document.write( "t = -6
\n" ); document.write( "or
\n" ); document.write( "2t - 1 = 0
\n" ); document.write( "t = 1/2
\n" ); document.write( "So, t can equal -6 or 1/2
\n" ); document.write( "Hope this helps:-) \n" ); document.write( "

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