1 Answer

Metagrapher · Answer 1 · 2023-05-01T03:55:32+0000

Answer:

D) x = 20

Explanation:

It's given that angle <AOD is equal to 100 degrees.
Therefore, according to the angle addition postulate, <AOB + <BOC + <COD = 100 degrees, as they all make out angle <AOD.

$3x - 15 + x - 5 + 2x = 100 \\\to 6x - 20 = 100 \\\to 6x = 120 \\\to x = 20$

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