B. Lydia wants to describe each bicyclist's
rate in kilometers per minute for an article in
the school paper. To do this, she sketched
triangles like the one for line A on the graph
below.
Where do the 4 and 6 come from on Racer
A's triangle? What do they represent?

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 −