Suppose we have two unfair coins. The probability of getting head from each of them is 0.75. If we flip those two unfair coins, we write down the probability distribution for the number of heads. a. Find the expected value.
b. Calculate the variance.

no not all of them.

step-by-step explanation:

some of them have a square base.

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w