What is the equation of an ellipse if its major axis is parallel to the y-axis, centered at (h, k), and has a horizontal radius of a and a vertical radius of b?
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What is the median of the following data set: 7, 9, 11, 13, 15, 22, 26, 28, 28, 29?
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What is the equivalent value, in radians, of an angle that measures 60 degrees?