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OpenStudy (anonymous):
(x-7)^2/(4) + (y+3)^2/(16) =1 a. 32 b. 16 c. 4 d. 8
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OpenStudy (phi):
You posted the equation of an ellipse, but what question is being asked? The semi-major axis is 4 (sqrt of 16) and the semi-minor axis is 2. If the question was about the semi-major axis you know the answer.
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