#1**0 **

These lines are parallel, so once we draw a line through both of them those to angles are the same

9x+24=x^2+4x

x^2-5x-24=0

we see that -8 and 3 are the roots as they add up to -5 and multiply to -24

there fore (x+8)(x-3)=0

however we notice when we plug in negative eight. The second angle gives a negative value, so therefore 3 is the answer

$\boxed{3}$

Guest Mar 11, 2021