Answer: 15
Step-by-step explanation:
12^2 + 9^2 = 225
square root of 225 = 15
Hi sam, do you want to know the answer? Try using a protractor, you will see the degree is 125, its like a obtuse angle
Step-by-step explanation:

Answer:
To find the mean absolute deviation of the data, start by finding the mean of the data set. Find the sum of the data values, and divide the sum by the number of data values. ... Divide the sum of the absolute values of the differences by the number of data values.
Follow the rules of PEMDAS:
42/(15-8)
42/7
6