Find the value of 'b' if the foci of an ellipse are located at (-3,0) and (3,0), the major axis has a length of 10, and the minor axis has a length of 8.
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What is the length, in centimeters, of a 4.5-foot-long rope?
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What is the mode of the data set: 12, 14, 14, 16, 18, 20?