Answer:

Step-by-step explanation:
Soh-cah-toa is a great way to remember:

You just remember the first letters : sine= opposite/hypotenuse , for example.
Times the bottom equation by -4 to cancel out the x’s.
Add the equations.
Solve for y.
Plug in y to find x.
Answer:
D
Step-by-step explanation:
I can explain if you need. Write in comments if you do need.
77 green marbles
try googling the rest or 33/77=77%
Answer:
C. Irrational because it is a non-terminating and non repeating