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Geometry 17 Online
OpenStudy (anonymous):

in order to hear what's said in a football huddle, a listening is set up on the sideline. It consists of a parabolic dish with a microphone at its focus. The dish is 4 feet across and 16 feet deep. gie and equations for the parabola with the origin of the coordinate system at the vertex of the parabola and

OpenStudy (perl):

|dw:1425249299174:dw|

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