i need help i’m struggling

9514 1404 393
Answer:
B. 85°
Step-by-step explanation:
The angle where the chords cross is half the sum of the angles they intercept.
70° = 1/2(55° +x°)
140° = 55° +x° . . . . . multiply by 2
85° = x° . . . . . . . . subtract 55°
Answer:
Step-by-step explanation: