The mean of eight numbers is 83. the mean of another four numbers is 14. find the mean of the combined set of numbers.
1 answer:
Total numbers =8+4=12
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It would be A because the r is being distributed to both the a and the b
4x - (6-x) = 12 + 4x
4x - 6 + x = 12 + 4x
5x - 6 = 12 + 4x
5x - 4x = 12 + 6
x = 12 + 6
x = 18
