A bag contains 2 green, 9 brown, 7 yellow, and 4 blue marbles. Once a marble is selected, it is not replaced. Find the probability. P(green, then blue)

6/43

2/121

1/2

4/231

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?