I believe the answer to this diagram should be <u><em>Diagram B</em></u>
Answer: The common denomination is 12
Step-by-step explanation:
Answer:
x = 91
Step-by-step explanation:
The opposite angles of an inscribed quadrilateral are supplementary, that is
∠ A + ∠ C = 180, thus
x + 89 = 180 ( subtract 89 from both sides )
x = 91
It should be D, I did the math :)