Use the substitution method to solve the system of equations

(2,4)

Step-by-step explanation:

Take the 2x from y=2x and plug it into the y for 3x+y=10

You now have 3x+2x=10

Combine like terms so 5x=10 then divide by 5x to both sides and x=2

Then plug in 2 for x in y=2x so it becomes y=2(2)  y=4

So the answer is (2,4)

< 4 = < 5 they are vertical angles

120 degrees