Pre-Calculus Homework Solutions 50

# Pre-Calculus Homework Solutions 50 - 54. Given: AB Prove:...

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54. Given: AB 5 CD Prove: AC 5 BD Proof: 55. m / 6 5 180 2 35 or 145 56. m / 7 5 180 2 157 or 23 57. m / 8 5 180 2 90 or 90 58. Given: / 1 and / 2 form a linear pair. m / 2 5 2( m / 1) Prove: m / 1 5 60 Proof: Chapter 2 Practice Test Page 121 1. Sample answer: Formal is the two-column proof, informal can be paragraph proofs. 2. Sample answer: You can use a counterexample. 3. Sample answer: statements and reasons to justify statements 4. true; Symmetric Prop. 5. false; y 5 2 6. false; a 52 4 7. 2 3 . 2 and 3 x 5 12 when x 5 4.; false, because p is false and q is true 8. 2 3 . 2 or 3 x 5 12 when x 5 4.; true, because p is false and q is true 9. 2 3 . 2, or 3 x 5 12 when x 5 4 and an equilateral triangle is also equiangular.; true, because q is true and r is true so q ` r is true and p is false 10. Hypothesis: you eat an apple a day; Conclusion: the doctor will stay away; If you eat an apple a day, then the doctor will stay away. Converse: If the doctor stays away, then you eat an apple a day.
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## This note was uploaded on 12/19/2011 for the course MAC 1140 taught by Professor Dr.zhan during the Fall '10 term at UNF.

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