Please help me with this homework

7.

8.

9.

10.

11.

12.

Step-by-step explanation:

Let's do something called cross-multiplication. It's exactly what it sounds like, we multiply the top number with the denominator across the multiplication.

Now we can simplify.

So we got the answer for the first one. We can keep doing the same thing for the others.

i think asking google will you get the answer to that question

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are