Determine whether or not the 2 lines are parallel, perpendicular, or neither. CAN YOU PLEASE ALSO SOLVE THE MATH!​

#9

Lines are perpendicular

#10

Neither parallel nor perpenducular

#11

Lines are parallel (has no solutions as a1b2 not equal to a2b1)

#12

Lines are parallel

#13

Neither parallel nor perpendicular

#14

Neither parallel nor perpendicular

#15

Neither parallel nor perpendicular

#16

Lines are perpendicular

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,