Respuesta :

legomyego180

[tex]2x + (x + 2) + 40 = 180 \\ 3x + 42 = 180 \\ 3x = 180 - 42 \\ 3x = 138 \\ x = \frac{138}{3} \\ x = 46[/tex]
Plug x back into angle B to get answer

[tex]b = 2x \\ b = 2 \times 46 \\ b = 92[/tex]
92 degrees would be the answer