Answer:
The answer is 21
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You multiply them together; to get 8.55
I got your answer! I will tell you right now. Your GCF is 9 and your LCM is 180! Your very much welcome!! Good luck for you! :)
Standard error (SE)

Or

Therefore, SE of the mean = (8)/(2) =4
Depends it could be 14812 if they want total value or just the interest would be 7812