Math, asked by venkatkalai72, 1 day ago

MATHEMATI 91. If 2 is added to all the observations, 3, 6, 9, 12 and 15. Then the mean of the new observations is : (1) 9 (3) 3 55 (2) 11 (4) 45 92. If (a + b) =12 and a? – b2 = -24 then the value of a-bis.

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Answered by MayaAdriana

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the answer is 11

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