Question

I need helppppp!! :)))) please thank you

Answer 1

∠4 = 11

Explanation:

In this question we can use the exterior angle theorem. This means that the two other angles that aren't adjacent to ∠4 are equal to ∠4 when added together. If you add ∠1 and ∠2 together, you will get ∠4.

`8x+9+4x+14=13x+12`

Combine like terms.

`12x+23=13x+12`

Subtract 13x from both sides.

`x+23=12`

Subtract 12 from both sides.

∠4 = 11