Since the values are equally likely and equally spaced, their mean is the middle one.
the mean is 1/5
The variance is the average of the square of the deviations from the mean.
σ² = (1/3)((-1/10)² + 0² + (1/10)²) = 2/300
the variance is 2/300
The perimeter of the semi-circular disc of radius 10.5 cm is 54 cm.
The answer is 3 because it goes into 39 and 42 and 6 doesn't go into 39
I dont know if im right but i think its -14
Answer:
Rearrange the numbers to their like terms.
which is 2x-x=56-20.
x=36.
