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Mathematics, 02.12.2021 04:40 Davisja21

HELP ME PLEASE A student writes down four random numbers: -20, 55, 10, -15. A second students adds one number to the set, making the average 11. What number did the second student add to the set?

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HELP ME PLEASE A student writes down four random numbers: -20, 55, 10, -15. A second students adds...
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