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What number does someone need on the next test to keep the 81 mean if the past 3 tests had 59, 87, 97
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Oct 27, 2022
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What number does someone need on the next test to keep the 81 mean if the past 3 tests had
59, 87, 97
Mathematics
college
Nmio
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81,
First, reverse the mean equation of sum of all #’s divided by the # of #’s to the mean times the # of #’s to get the sum of all numbers.
81*4=324
Then we subtract the sum of the three #’s.
324-243=81
Lex Podgorny
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Nov 1, 2022
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Lex Podgorny
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