Question

What is the value of n? A.81 B.85 C.38 D.47

Answer 1

Answer:

B

Step-by-step explanation:

∠ABC= 180° -142° (adj. ∠s on a str. line)

∠ABC= 38°

∠BAC= 180° -133° (adj. ∠s on a str. line)

∠BAC= 47°

∠ACB= 180° -38° -47° (∠ sum of △)

∠ACB= 95°

n°= 180° -95° (adj. ∠s on a str. line)

n°= 85°

n= 85