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Mathematics, 01.06.2021 18:50 graceaowen

Jina has scored 79, 85, 89 and 68 on her previous four tests. What score does she need on her next test so that her mean is 80?

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Jina has scored 79, 85, 89 and 68 on her previous four tests. What score does she need on her next t...

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