Mathematics, 22.07.2019 05:00 hannahliebl2000

Skylars grades on four math tests are 85,78,77 and 69 what does skylar need to. score on the next test in order to have a mean score of 80

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Skylars grades on four math tests are 85,78,77 and 69 what does skylar need to. score on the next te...