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16 September, 14:36

If BC = 8x, CD = 2x, and BD = 10, what is BC? Simplify your answer

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  1. 16 September, 14:49
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    BC = 8x

    CD = 2x

    BD = 10

    BC + CD > BD

    8x + 2x > 10

    10x > 10

    x > 1

    BC + BD > CD

    8x + 10 > 2x

    8x - 2x > - 10

    6x > - 10

    x > - 10/6

    BD + CD > BC

    10 + 2x > 8x

    10 > 6x

    x < 10/6

    Thus x lies between 1 and 1.6
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