Respuesta :

SDCInfinity

Answer:

B. 10

Step-by-step explanation:

These are vertical angles meaning they are also equal.

[tex]4x-12=2x+8\\2x-12=8\\2x=20\\x=10[/tex]

ghaithgh

Answer:

The choice B. 10

Step-by-step explanation:

4x -12=2x+8 —> Opposite angles

4x -2x =8+12

2x = 20

x =20/2

x= 10

I hope I helped you^_^

good job