1) given that those two lines are parallel, we can deduce that 9/45=x/75. 9/45 simplifies to 1/5 so 1/5 = x/75. Cross multiply to get this: 5x = 75. Divide both sides by 5 to get x. Final answer: x = 15
2) Again, we can set up a proportion to solve for x because we know the lines are parallel. 24/36=x/12. 24/36 simplifies to 2/3 so 2/3=x/12. Cross multiply to get this: 3x = 24. Divide both sides by 3 to get x. Final answer: x = 8
