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March 26, 2017

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A 20-ft diagonal brace on a bridge connects a support of the center of the bridge to a side support on the bridge. The horizontal distance that it spans is 4 ft longer than the height that reaches on the side of the bridge. Find the Horizontal and vertical distances spanned by this brace.

  • algebra - ,

    Let height=h then
    h^2+(h+4)^2=20^2
    h=12

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