What's the answer its for a final exam

x would be 10. If you plug in 10 for 7x and 10 you'll get 30+7(10)=10(10). YOu then distributes them and get 30+70=100. SO the angle measure for the exterior angle is 100 degrees.

12m

step-by-step explanation:

square root means have of a number so have of 3 is 1.5 then multiply it by 8 and you get your answer!

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)