Mathematics
Mathematics, 04.10.2019 20:00, Serenaark2834

On his first three tests, justin scored 99, 93, and 86. what score must he get on his fourth test to have an average (mean) of
80 for all four tests?

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On his first three tests, justin scored 99, 93, and 86. what score must he get on his fourth test to...

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