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Mathematics, 28.01.2020 16:49 meandmycousinmagic

Astudent's grade depends on her score on four equally-weighted exams. her average on the first three exams is 92. what must she score on the fourth exam in order to guarantee a final average of at least 90?

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Astudent's grade depends on her score on four equally-weighted exams. her average on the first three...
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