Respuesta :

Banabanana
m∠ABC=180°

7x+x-4 = 180
8x = 180+4
8x=184
x=184:8
x=23

∠DBС = x-4 = 23-4 = 19°

Answer: 19°.
apocritia

Answer:

C 23

Step-by-step explanation:From linear pair we can write [tex]7x+(x-4)=180[/tex]

[tex]7x+x-4=180\\8x-4=180\\8x=180+4\\8x=184\\x=\frac{184}{8} \\x=23[/tex]

Hence the value of x in the given figure is 23

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