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31 December, 16:38

If AD = y + 6 and DC = 2y, what is the length of DC?

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  1. 31 December, 20:23
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    We are given

    AD = y + 6 and DC = 2y

    From the figure, we have the equation

    AD = DC

    Substituting the given

    y + 6 = 2y

    Solving for y

    y = 6

    Subsituting the value of y in DC

    DC = 2 (6) = 12
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