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umka21 [38]
3 years ago
9

David’s scores on the first three of four 100-point math tests were 86, 92, and 89. What score does he need on his fourth math t

est to ensure an average score of at least 90?
Mathematics
1 answer:
Marina CMI [18]3 years ago
6 0
David needs at least a 93 to get an average score of 90.
86+ 92+ 89+ 93= 360
360/4= 90
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