rkbilkhu1353 rkbilkhu1353

02-12-2021
Mathematics

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The mean of 7 numbers is 15. When an 8 thnumber is added, the mean decreases to 12. What is the 8 thnumber?.

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chencrystal9002 chencrystal9002

02-12-2021

Answer:

-9?????????????????????????

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