Answer:
D.
Step-by-step explanation:
with questions like this try using Desmos
Answer:
9.9
Step-by-step explanation:
Answer:
B=45
Step-by-step explanation:
let the supplamentary angle of <A is <d
180-A=d
180-135=d
45=d
90+d+B=180
90+45+B=180
135+B=180
B=180-135
B=45