ConstanceBhoo3550 ConstanceBhoo3550

08-09-2018
Mathematics

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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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redgram59 redgram59

09-09-2018

91 so the mean can avrege out to 82

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