Rosa draws 2 lines intersecting. She measures one angle to be 30 degrees and another to be 150 degrees. What are the other 2 angle measures in the figure. How do you
know?

We know that 108 degrees is the measure of one angle in a regular polygon.

Step-by-step explanation:

if he has no friends he cant give them out to his friends

step-by-step explanation:

no friends = cant give anything out

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18