Question

what is mean of x+3, x+6, x+9, x+12​

Answer 1

If the arithmetic mean of x, x+ 3, x+6, x+9, and x+12 is 10, then find the value of x. Get the answers you need, now!

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Answer 2

here mean = sum of observation /number of observation

so mean = x+3+x+6+x+9+x+12/4= (4x+30)/4= x+ 7.5

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