Help, it's a lot, but will appreciate!

Answer:
Step-by-step explanation:
3: x=9, y=15
4:n=12, m=5
5: a=55
6: p=60
7:z=28, d=126
8: h=9, g=61
9:Angle B=129
10:Angle L=85
11: Angle Y= 61