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The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Find the area of the triangle shown 3 by 6