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17 January, 11:54

Your new TV screen has a width that is 4 inches longer than its height. If the screen's diagonal measurement is 20 inches, find the height.

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  1. 17 January, 13:52
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    So the height is 12

    Step-by-step explanation:

    Let W be the width

    Let W - 4 be the height

    W2 + (W-4) 2 = 400

    So: W2 - 4W-192 = 0

    One uses the quadratic solution:

    W = (4 + (16 + 4*192).5) / 2 = 16
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