2 days to get this apology. its really does suck to not get your question answered in the firs ten min <span />
34
because, 34 = 14 + (10 x 2)
and 34 = 24 + (10 x 1)
Step-by-step explanation:
since all angles add up to 180:
(8x-1)+(3x+4)+(3x+9)=180
add like terms:
14x+12=180
x=12
Hope that helps :)
The answer would be 4.12 because the other one is a negative