Answer:it’s B (120 succes and 80 failures for khan academy)
Step-by-step explanation: trust me
Answer:
x = 50
Step-by-step explanation:
Answer:
β = 140 - α
we know that the "missing" angle is 40° since 40 + 140 = 180
we also know that the total sum of angles in a triangle is 180
so β = 180 - 40 - α
or β = 140 - α
Step-by-step explanation: