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Arithmetic mean = 120
The mean IQ is a score of 100.
x=134
If you mean 120 square yards, then 1,080.If you don't mean square yards, talk to your teacher about area and length...
100 & 140. The two numbers are: the mean ± half the range. Half the range is 40/2 = 20. So the two numbers are: 120 - 20 = 100 120 + 20 = 140