Answer:
b = 34°
Step-by-step explanation:
b + 115° + 31° = 180°
b + 146° = 180
b = 180° - 146°
b = 34°
Answer:
2 and 4 has no soulotions, and C has one
Step-by-step explanation:
Answer:
Division is not commutative because 25÷5 does not equal 5÷25
Step-by-step explanation: