Miguel has a can of 20 marbles, including 10 blue, 6 red, and 4 green. If Miguel's brother reaches in at random and selects two marbles, what is the probability that one marble is blue and one marble is green?

Which of the following is the result of expanding

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

Simplify each expression. use positive exponents. show work . (x –2 y –4 x 3 ) –2