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You score 92, 86, 98, and 94 on your first four social studies tests. What score must you get on the fifth test to have a mean score of 90?
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Jan 24, 2018
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You score 92, 86, 98, and 94 on your first four social studies tests. What score must you get on the fifth test to have a mean score of 90?
Mathematics
middle-school
ThommyB
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Answer:
80
Explanation:
Collie
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Jan 25, 2018
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Collie
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92 + 86 + 98 + 94 = 370 / 4 = 92.5 avg. to decrease this mean to 90, we can add a score of 80. Thus, (80+370) / 5 = 90
80
Flux
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Jan 30, 2018
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