Question: What is the sum of the mixed numbers 3 1/2, 2 2/3, and 4 3/4 when expressed as fractions?
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What is the equation of an ellipse centered at (h,k), with a major axis of length 2a parallel to the x-axis and a minor axis of length 2b parallel to the y-axis?
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What is the relationship between the angles formed by two intersecting lines?