The answer is 36 because 64+36=100
The mean of the probability distribution is given by the expected value given by

The variance of the probability distribution is given by

The standard deviation is given by
If the prism length is L, trapezoid base width B, trapezoid top width A, and trapezoid height H, then the volume of the prism is given by the four-variable formula: V(L, B, A, H) = LH(A + B)/2.
" In other words, multiply together the length, height, and average of A and B."
0.86z would be the answer!
1) 500+60+3 and 563
2) 1 hundreds + 0 tens + 9 ones and 100+0+9
3) 9 hundreds + 2 tens + 23 ones and 23 ones?? not possible!.
4) 370 and 300 + 70 + 0
Hope my answer helps!