Delete AC and focus on the intersection of AB and BC. Keeping points B and C fixed, move point A to different locations and observe how ZABC changes. What must you do to increase or decrease m ABC ? What happens if you move point A to a location directly on CB? What is
mZABC at this location?

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 −