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An arch is in the shape of a parabola with its vertex at the top. It has a span of 100 feet and a

An arch is in the shape of a parabola with its vertex at the top. It has a span of 100 feet and a maximum height of 40 feet. Find the equation of the parabola, and determine the height of the arch 10 feet from the center of the base of the arch. 39 ft

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