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# ch7_ans - Chapter 7 Answers to Nontriangle Exercises...

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Chapter 7 Answers to Nontriangle Exercises Exercise 7-2 2. Premise: The Lakers almost didn’t beat the Kings. Conclusion: They’ll never get past Dallas. 3. Premises: If the butler had done it, he could not have locked the screen door. The door was locked. Conclusion: The butler is in the clear. 5. (I broke this down into 2 arguments, with part of each unstated). Premise: His mother’s daughter has only one brother. Conclusion (from preceding) and premise (for remainder): (Unstated:) He is his mother’s daughter’s brother. Premise: (Unstated:) He can’t be older than himself. Conclusion: He can’t be older than his mother’s daughter’s brother. 6. Premises: The state police have a weight limit. Moscone is over the weight limit. (These two premises could be combined into a single conjunctive premise; see Ch10.) Conclusion: Moscone will never make it into the state police. 8. Premise: He wastes his time watching daytime TV. (Although stated as a question, the claim is clear enough.) Conclusion: He doesn’t have a thing to do. 9. Premises: There are more injuries in professional football today than there were twenty years ago. If there are more injuries, then today’s players suffer higher risks. If today’s players suffer higher risks, then they should be paid more. Conclusion: Today’s players should be paid more. Exercise 7-3 I left out “probably.” 2. Premises: Kera, Sherry, and Bobby were all carded at JJ’s. They all look as though they’re about thirty. Conclusion:I’ll be carded too. 3. Premise: Seventy percent of the freshmen at Wharfton College come from wealthy families. Conclusion: About 70 percent of all Wharfton College students come from wealthy families. 5. Premises: A cut in the capital gains tax will benefit wealthy people. Marietta says her family would benefit from a capital gains cut. Conclusion: Marietta’s family is wealthy. 6. Premises: According to Nature, today’s thoroughbred racehorses do not run any faster than their grandparents did. Human Olympic runners are at least 20 percent faster than their

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counterparts of fifty years ago. Conclusion: Racehorses have reached their physical limits but humans have not.
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ch7_ans - Chapter 7 Answers to Nontriangle Exercises...

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