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Oksi-84 [34.3K]
3 years ago
13

So far this semester, Zachary has test scores of 92, 98, 65, 77, 91, and 85. He has one more test to take before the semester en

ds. What must he score on the last test to earn an average of 85 for the semester? Type a numerical answer in the space provided.
Mathematics
2 answers:
Mashutka [201]3 years ago
3 0
He has to at least make an 87
Marianna [84]3 years ago
3 0
Et X be the last test. 
<span>Therefore, </span>
<span>85=(92+98+65 +77+91+85+X) / 7 </span>
<span>Solving this equation^, </span>
<span>we get X=87.</span>
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