9514 1404 393
Answer:
Step-by-step explanation:
The angles share a ray as well as a vertex. So, they are adjacent.
The two angles have a sum of 90°, so ...
4x° + 2x° = 90°
6x = 90 . . . . . . . . collect terms
x = 15 . . . . . . . . . . divide by 6
