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blkbutterfly13
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A 150ft 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 30 ft longer than the height that it reaches on the side of the bridge. Find the horizontal and vertical distances spanned by this brace.
 2 years ago
 2 years ago
blkbutterfly13 Group Title
A 150ft 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 30 ft longer than the height that it reaches on the side of the bridge. Find the horizontal and vertical distances spanned by this brace.
 2 years ago
 2 years ago

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campbell_st Group TitleBest ResponseYou've already chosen the best response.0
draw a diagram and let the vertical height = x dw:1346657572777:dw use pythagoras' theorem to form a quadratic equation 150^2 = x^2 + (x + 30)^2 or 2x^2 + 60x 21600 = 0 or x^2 + 30x  10800 = 0 this quadratic factorises so use the positive solution for x as measurement can only be positive the quadratic
 2 years ago
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