Respuesta :

Answer: D.120°

because 29x + 4 and 30x are 2 opposing angles

=> 29x + 4 = 30x

⇔ 4 = 30x - 29x

⇔x = 4

with x = 4,  the measure of the angle is 4.30 = 120

Step-by-step explanation:

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