I need help solving this step by step

x = -10

Step-by-step explanation:

1) A line creates a 180° angle on each side of it. Even if another line intersects it, we know that the total measure of angles on that side will equal 180°.

2) We set the equations equal to 180.

(-4x) + (-14x) = 180

Combine like-terms

-18x = 180

Isolate x by dividing both sides by -18.

x = -10

3) To solve for each angle, you can plug in -10 for x and solve.

-4(-10) = 40°

-14(-10) = 140°

25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)