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4 July, 13:55

A 25-foot ladder is placed 7 feet from the wall, as shown.

25 ft.

7 ft.

If the top of the ladder slips down 4 feet, how many feet will the bottom slide out?

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Answers (2)
  1. 4 July, 14:01
    0
    The answer is 8 feet.

    Step-by-step explanation:

    Let x = height where the ladder hits the building

    7 squared+x squared=25 squared

    49+x squared=625

    x squared=576

    x=24 feet

    Let x = distance from wall:

    x^2 + 20^2 = 25^2

    x^2 + 400 = 625

    x^2 = 225

    x = 15 feet
  2. 4 July, 14:20
    0
    The answer is 8 feet.

    Step-by-step explanation:

    Let x = height where the ladder hits the building

    7 squared+x squared=25 squared

    49+x squared=625

    x squared=576

    x=24 feet

    Let x = distance from wall:

    x^2 + 20^2 = 25^2

    x^2 + 400 = 625

    x^2 = 225

    x = 15 feet
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