The mean of a set of numbers is the average. That is to say, all the numbers added together and divided by the number of the numbers.
the answer is 30.5
60
The answer is 40.
50 + 40 + 40 + 40 + 30 + 30 + 20 + 10 = 260
22
10 + 10 + 10 + 10 = 40
I think you mean you want to pull the common factor(s) of 10 and 40 outside the expression 10 + 40. Since 40 is divisible by 10, 10 is clearly the gcf. So 10 + 40 = 10 * 1 + 10 * 4 =10 * (1 + 4).
60
10 plus 20 plus 30plus 40 plus 50 equals 150 because 50 plus 40 equals 90 plus 30 =120+20= 140 then + 10 = 150
209
30
18
40