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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?

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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Step-by-step explanation:

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