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15 May, 04:04

Tiana is on a 25-foot ladder that is leaning against her house. Its base is 7 feet from the base of the house. The ladder slips so that the base of the ladder is 8 feet farther from the house. How far did the top of the ladder move down the wall?

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  1. 15 May, 04:11
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    4 ft downwards

    Step-by-step explanation:

    old height off the ground:

    7^2+b^2=25^2

    49+b^2=625

    b^2=576

    b=24

    new height off the ground:

    7+8=15

    15^2 + b^2 = 25^2

    225+b^2 = 625

    b^2 = 400

    b=20

    difference between heights:

    24 - 20 = 4
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