Answer to a math question Sabendo+que+o+tri%C3%A2ngulo+ABC+%C3%A9+ret%C3%A2ngulo+e+que+um+de+seus+%C3%A2ngulos+mede+30+quanto+mede+o+terceiro+ tri%C3%A2ngulo
What is the formula for calculating the standard deviation?
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Math question: In triangle ABC, the measure of angle A is 60°, and its angle bisector, AD, intersects side BC at point D. If the length of BD is 8 cm, what is the length of DC?
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What is the slope of a line passing through the points (3, 5) and (-2, 9)?