The answer is D. 42
A triangle equals 180 in total so what you would do it subtract 122 from 180 because 180 is also the angle of a straight line. You would get 58 then you add 58 and 80 to get 138. Subtract 138 from 180 and you get your answer of 42
2x - 5x + 4 = 0
- 3x = - 4
x = 4/3
Answer: did u get it right
Step-by-step explanation:
Answer:
Pythagoras
Step-by-step explanation:
Pythagoras