Answer:
x = 19
Step-by-step explanation:
123°+3x = 180°
3x = 180°-123°
3x = 57
x = 57/3
x = 19
The reason why we use 123° + 3x = 180° because both are adjacent angles. Adjacent angles add up to 180°
Answer:
The first and last one.
Step-by-step explanation:
you can't see over him
she is the same age
It’s b.
because it’s would be 180-45
Answer:
okay
Step-by-step explanation:
