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Mathematics, 11.07.2019 04:00 adkinsryan72

David has scored 81 , 87 , 69 , and 82 on his previous four tests. what score does he need on his next test so that his average (mean) is 82 ?

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David has scored 81 , 87 , 69 , and 82 on his previous four tests. what score does he need on his ne...

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