Mathematics, 13.10.2019 03:50 alexabessin

There are three exams in a marking period. a student received grades of 75 and 81 on the first two exams. what grade must the student earn on the last exam to get an average of no less than 80 for the marking period?

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There are three exams in a marking period. a student received grades of 75 and 81 on the first two e...

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