Answer:
I don't know if it's correct
but I tried
Step-by-step explanation:
let the angle be x
20+4x+x=180
20+5x=180
5x=160
x=32
Answer:
11/25
Step-by-step explanation:
You would add the black, white and red which equal 50. Next you would get 22(red) over 50 (total) 22/50 = 11/25 when you simplify
Answer:
it's right
Step-by-step explanation:
3x - 5 = 7
3x = 7 + 5
3x = 12
x = 12/3
x = 4