4 is 20% of 20. Hope this helps!
Use elimination.
-x = -6
X = 6
-4 (6) + 4y = 12
Y = 9
(X,y)
(6,9) is the solution
The answer is d!!! Hope that helps!!
Answer:
the answer is x= 3 and y= -1
(-3 - 2i) x (-4+ 2i) if you simplify using FOIL you will get 16+2i