Parallel lines p and q are intersected by transversal r, as show.

Using the corresponding angles theorem, the value of x is 150°
From the question, we are to determine the value of the angle marked x°
From the diagram,
The angle that supplements the angle marked 30° is corresponding to angle x
Since corresponding angles are equal
Then, we can write that
∴ x = 180° - 30°
x = 150°
Hence, the value of x is 150°
Learn more on Calculating measures of angles here: https://brainly.com/question/11726925
#SPJ1