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OpenStudy (anonymous):
A building has an entry the shape of a parabolic arch 84 ft high and 42 ft wide at the base as shown below. Find an equation for the parabola if the vertex is put at the origin of the coordinate system. y2 = -21x x2 = -21y x2 = -5.3y y2 = -5.3x
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OpenStudy (anonymous):
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