Determine whether or not the following graph represents two quantities that are proportional to each other. Explain your reasoning.

Find the value of the variable and the length of each secant segment.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

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 −