Question: In triangle ABC, angle A is bisected by a line segment, creating two angles: angle BAC and angle CAD. If angle BAC measures 40 degrees, what is the measure of angle CAD?
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What is the standard deviation of a dataset {3, 5, 7, 10, 12}?
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Question: What is the range of the constant function f(x) = c, where c is a real number? (