50 because 80+50+x=180 (inside triangle) x=130 180-130= 50 (angle outside triangle)
Answer:
Andre has the correct answer. When simplified his answer is equivalent to the original equation.
Answer:
2n + 9 = - 25
Step-by-step explanation:
let the number be n then twice the number is 2n
The sum of 2n and 9 is 2n + 9
the result is - 25 , that is
2n + 9 = - 25
Answer:
20
Step-by-step explanation:
