It is 13.
mean = sum / (how many) = 39/3 = 13.
Sorry the problem is 12-4*8+16-(-19)-(-8)
If x = 8 satisfies the equation 19 - x = 12, then it is a solution of the equation. 19 - x = 12 19 - 8 = ? 12 11 ≠ 12 Since x = 8 does not satisfy the equation, x = 8 it is not a solution.
Of 6, 8, 12, and 19, only 19 is a factor of 76.
The mean is the sum of the values divided by the number of values. In this case (12+10+19+8+2+15+1+20+6+11+3+7)/12 = 9.5.
5 + 8 + 20 + 12 + 19 = 64
8+11,7+12 eqauls 19
12/19 is greater than 8/13 because 12x13=156 and 8x19=152 and 156 is greater than 152 so 12/19 is greater than 8/13
19
If you mean 8/19 then the denominator is 19 and the numerator is 8
mean = (17 + 43 + 19 + 8 + 26 + 33 + 8) ÷ 7 = 22
Mean (12, 18, 19, 20, 21) = 18
for all x; (x + 19) - x = 19