Three angles are supplementary. ∠ACB=x+15° , ∠BCD=x+48°, ∠DCE=13°. What is the value of ∠BCD?

A: 52°

B: 80°

C: 100°

D: 67°

2 answers

B: 80°
AAAaannndd the bot gets it wrong yet again!

x+15 + x+48 + 13 = 180
x=52
so ∠BCD = x+48 = 100°