Rachel works at a bookstore. on tuesday, she sold twice as many books as she did on monday. on wednesday, she sold 6 fewer books than she did on tuesday. during the three days rachel sold 19 books. create an equation that can be used to find m, the number of books rachel sold on monday.

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.