When you square a number, you multiply it by itself. So, 9 squared means 9 multiplied by 9, which equals 81. In mathematical notation, 9 squared is written as 9^2 or 9 x 9.
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7.75 is the mean of 6.5 and 9.
The geometric mean of 9 and 81 is 27.0
The geometric mean of 9 and 25 is: 15.0
9*9
The mean is found by adding the values together and dividing by the number of values. 5+7+9+11+13+9 = 54 54 divided by 6 is 9. The mean of 5, 7, 9, 11, 13, 9 is 9.