Equation 1: 4y+2x= 4
equation 2: 4y+6x=8
4y+2x=4
-
4y+6x=8
—————
-4x=-4
x=1
plug back in 4y+2=4
4y=2
y=1/2
solution at (1, 1/2 )
This time it's cosine.
Cosine is the adjacent/hypotenuse. In this case, the adjacent is 15 and hypotenuse is 21.
15/21, or like 5/7.
Now put that into a fancy calculator with the

thing or something like that and then you have the answer, or around 44 degrees.
Answer:
What the first person said
Answer:
the answer is essentially d
Answer:
24:56
Simplified: 8:7
Step-by-step explanation: