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Mathematics, 14.04.2020 19:42 aleiahmartin

Laura has scored 75, 85, 81, 67, and 91 on her previous five tests. What score does she need on her next test so that her average (mean) is 77?

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Laura has scored 75, 85, 81, 67, and 91 on her previous five tests. What score does she need on her...
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