Answer:Reciprocal of 9 is 1/9 or 0.111111111111111.
Answer:
it's 60 mm
Step-by-step explanation:
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Answer:
x+2
Step-by-step explanation:
The firs 3 observations are x, x+2, x+4
Mean = sum of data/samaple size
Mean = x+x+2+x+4/3
MEan = 3x+6/3
Mean = 3(x+2)/3
Mean = x+2
Hence the required mean is x+2