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An Arithmetic Student Needs At Least A 70% Average To Receive Credit For The Course. If She Scored 86%, 77%, And 64% On The First Three Exams, What Is The Lowest Score She Can Get On The Fourth Exam To Receive Credit For The Course?

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Answer is 53% when you add 53% to the first 3 grades divide it by 4.. You get 70.5% which is the lowest he can get
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To find the answer you want to add all he problems up and divide them by 3 so you would add 86 plus 77 which =163 plus 64=227 then divide by 3 = 75%

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