Respuesta :

WeasuLL

Hi there!


The answer is A



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- WeasuLL

PLEASE GIVE BRAINLIEST

Answer:

D. 21

Step-by-step explanation:

In the diagram, O is circumscribed about the quadrilateral ABCD.

We know, that in the quadrilateral ABCD (inscribed inside the circle) the sum of opposite angles is equal to 180 degrees.

Angle A + Angle C = 180 degrees and Angle B + Angle D = 180 degrees.

So, 5x + 75 = 180

or, 5x = 180- 75

or, 5x = 105

or, x = 105/5

or, x = 21

Hope this helps..

Thank you..!!



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