Find the value of x.

x = 9

Step-by-step explanation:

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P.S:

x cannot be equal to (-9) because the value of a side cannot be negative

The formula that I used is Pythagoras Theorem

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.