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2/3 , 3/4 7/12 there you go
Explanation
Part A
We can use the formula below to find the mean.

We will then have;

Mean = 6.2632
Part B
Since the data set is odd.

Answer: From the column of cumulative frequency cf, the median is 7
The entire angle is a 90 degree angle.
Subtract the entire angle from what is given to find x.
90-28=62
x=62