What is the area of a triangle with sides of lengths 5, 7, and 9 using Heron's Formula?
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Math Question: In triangle ABC, the angle bisector of angle B divides side AC into two segments, AB and BC, in the ratio 3:5. If AB = 12 units, what is the length of segment BC?
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Math Question: Calculate the standard deviation of the following dataset: 12, 15, 18, 21, 24