X + 2y = 6 x - 4y = 8 2y - 6 = 4y + 8 6 - 2y = -4y + 8 6 - 2y = 4y + 8

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

4. a single woman uses an online cash flow calculator which reveals a cash flow of 203. what does this mean?

If wxyz is a square, which statements must be true?