Answer: y=28 degrees
Step-by-step explanation:
- To find angle B, all we have to do is subtract 145 from 180 since they're supplementary angles- so angle B is 35 degrees
- Now we can find x, by subtracting 14 from 35-> x=21
- We can create an equation using what we know about B to find y: 35= 63-y
- Solve the equation to get y=28 degrees
In this problem we used supplementary angles and algebra. We also used congruency.
