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Math Help - The equation of the ellipse that has a center at

  1. #1
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    The equation of the ellipse that has a center at

    Center (3,10)
    Focus (7,10)
    Vertex (-2,10)

    (x-3)^2/A^2 + (y-10)^2/9 = 1



    what is A??
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  2. #2
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    Quote Originally Posted by tiga killa View Post
    Center (3,10)
    Focus (7,10)
    Vertex (-2,10)

    (x-3)^2/A^2 + (y-10)^2/9 = 1



    what is A??
    A = 5 ... distance from the center to the vertex
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