Mathematics, 12.11.2020 07:00 PastelHibiscus

8. 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 making period?

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8. There are three exams in a marking period. A student received grades of 75 and 81 on the first tw...

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