II. Complete the following proofs. Given: LA and ZB are supplementary. mzB = 7MLA - 20 Prove: mZA = 25, mZB = 155 Statement Reason 1. LA and ZB are supplementary. 2. mZA+ mZB = 180 3. mzB = 7 ZA -20 4. mzB+ 7mZA-20 = 180 1. 2. 3. 4. 5. 8MLA - 20 = 180 5. 6. 8MLA = 200 6. 7. 7. mZA = 25 8. mZB = 7(25)- 20 9. mzB =155 8. 9.

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Question
II. Complete the following proofs.
Given: ZA and ZB are supplementary.
mZB = 7m.A - 20
%3D
Prove: mZA = 25, mZB = 155
Statement
Reason
1. ZA and ZB are supplementary.
1.
2. mZA + mzB = 180
2.
%3D
3. mZB = 7mZA- 20
4. mzB + 7mZA - 20
5. 8MLA - 20 = 180
3.
180
4.
5.
6. 8MZA = 200
6.
7. mZA = 25
8. mzB = 7(25)- 20
9. mzB =155
7.
8.
9.
Transcribed Image Text:II. Complete the following proofs. Given: ZA and ZB are supplementary. mZB = 7m.A - 20 %3D Prove: mZA = 25, mZB = 155 Statement Reason 1. ZA and ZB are supplementary. 1. 2. mZA + mzB = 180 2. %3D 3. mZB = 7mZA- 20 4. mzB + 7mZA - 20 5. 8MLA - 20 = 180 3. 180 4. 5. 6. 8MZA = 200 6. 7. mZA = 25 8. mzB = 7(25)- 20 9. mzB =155 7. 8. 9.
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