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Mathematics 8 Online
OpenStudy (anonymous):

bridge built in shape of parabolic arch. Bridge arch span of 166 ft, max height 40ft. find height of arch @ 10ft from ctr.

OpenStudy (anonymous):

ok that website didn't help me that i was looking at. i understand it's a quadratic 2a=166 c=40 and i need to move x from ctr to start at 10 and i need that y value there

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