What is the average weight of 20 students in a class if their weights are 120, 130, 135, 140, 125, 130, 135, 150, 155, 125, 130, 140, 135, 130, 145, 160, 155, 150, 135, and 140 pounds?
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What is the factored form of the mixed number 3 1/4, and what is its equivalent in decimal form?
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What is the rule for congruence of triangles that states two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle?