Any line parallel to 5x-8y=40 has a slope of

5/8

Step-by-step explanation:

-5 from 5 and put it on the other side

-8y=-5+40

then divide -5 by -8 then you get 5/8

parrelel then means the same slope due to the fact they never touch.

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2