Mathematics, 08.12.2019 05:31, queenpaige2015

Thanh has scores of 54, 83, 67, and 73 on his first four math exams. what score must he make on the fifth exam to have an average of 70 or better for the five exams?

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Thanh has scores of 54, 83, 67, and 73 on his first four math exams. what score must he make on the...