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Thread: finding x in this parabolas equation

  1. November 18th 2009, 08:44 PM #1
    leahx22
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    Exclamation finding x in this parabolas equation

    okay i've got y and the size of the parabola but i need the number x for the question! thanks. need this ASAP as exam is tomorrow!!

    20 = -0.222x(x -24)
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  2. November 18th 2009, 08:47 PM #2
    mr fantastic
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    Quote Originally Posted by leahx22 View Post
    okay i've got y and the size of the parabola but i need the number x for the question! thanks. need this ASAP as exam is tomorrow!!

    20 = -0.222x(x -24)
    Expand and re-arrange into the form ax^2 + bx + c = 0. Now use the quadratic formula.
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