Answer:
You use the pythagorean theorem given three angles in number two as it is a 30, 60, 90 triangle . The first one is a 60, 90 and a side and the third is a 60, 90 and a side as well. You should be able to find the equations for this easily enough.
Step-by-step explanation:
You have to find the lengths of x and y
You asked how to do it not for the answers to the questions
x= -3
7+ = 5
21+2x=15
2x=-6
4
3 x 4 = 12
(-1,-1)
4(-1) + -1 > -6
-4 - 1 > -6
-5 > -6
-5 is indeed greater than -6
