An animal shelter spends $1.50 per day to care for each cat and $3.50 per day to care for each dog. gianna noticed that the shelter spent $20.50 caring for cats and dogs on tuesday. gianna found a record showing that there were a total of 7 cats and dogs on tuesday. how many cats were at the shelter on tuesday?

If value of cos330° is √3/2 then find tan165°.

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 −

Which is the value of this expression when p=3 and q=-9