Shana and Bill are working together to solve the system by substitution. Shana wants to rewrite the first equation to solve for x. Bill wants to rewrite the second to solve for y. Who is correct? Why? x−2y+z=13−4x+y−2z=−302x+2y−z=2

Consider an example of a deck of 52 cards: example set of 52 playing cards: 13 of each suit clubs, diamonds, hearts, and spades ace 2 3 4 5 6 7 8 9 10 jack queen king clubs diamonds hearts spades what is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.