Im sorry im trying to get some points ): i hope u find ur answer!
3x - 4y = 9 and 2x + 3y = 7, which of the following would be the best method?
Solution: We are given below data:

Now to find the mean deviation, we use the below formula:

Where:
represents the summation
X, represents the observation.
represents the mean
N represents the number of observation.


Therefore, the mean deviation is:

= 4
Answer:
4 bowlers
Step-by-step explanation:
There are 18 different hats, 6 are bowlers
Find the unit rate: 6/18 or 1/3
1 bowler out of 3 hats
4 bowlers out of 12 hats
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