18. In the figure given, ray OB bisects angle ZAOC. Given the measure of angle ZAOB is 3x + 12, and the measure of angle ZBOC is 18x - 18, find the supplement of the measure of angle ZAOC. (A) 42° (B) 54° (C) 138° (D) 144° (E) None of these

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
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Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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18. In the figure given, ray OB bisects angle ZAOC. Given the measure of angle
ZAOB is 3x + 12, and the measure of angle ZBOC is 18x - 18, find the
supplement of the measure of angle ZAOC.
(A) 42°
(B) 54°
(C) 138°
(D) 144°
(E) None of these
Transcribed Image Text:18. In the figure given, ray OB bisects angle ZAOC. Given the measure of angle ZAOB is 3x + 12, and the measure of angle ZBOC is 18x - 18, find the supplement of the measure of angle ZAOC. (A) 42° (B) 54° (C) 138° (D) 144° (E) None of these
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