At a summer camp 23 of the boys and 17 of the girls can swim. There are 9 boys and 11 girls at the camp who cannot swim.
What is the ratio of the number of children who can swim to the number of children who cannot swim?

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −