The mean is the average of the numbers. to find the mean add up the numbers and divide by how many numbers there are
5 and 6 because 5 1/4 = 5.25.
5.25 is less than 6, but greater than 5.
You have to remeber that you have to have a number that is less than 10, but equal or greater than 1! Okay since your trying to get between 1-10 with this number you would move the decimal point 5 places to the right. And since you are going back it is going to be negative so the answer would be 6.72*10^-5
The period is pi/3
Have a nice day :)