20.Hypothesis: a man hasn’t discovered somethinghe will die for;Conclusion: he isn’t fit to live21.Hypothesis: the measure of an angle is between 0 and 90;Conclusion: the angle is acute22.Sample answer: If you buy a 1-year fitness plan,then you get a free visit.23.Sample answer: If you are a math teacher, thenyou love to solve problems.24.Sample answer: If I think, then I am.25.Sample answer: If two angles are adjacent, thenthey have a common side.26.Sample answer: If two angles are vertical, thenthey are congruent.27.Sample answer: If two triangles are equiangular,then they are equilateral.28.The hypothesis is true because you are 19 yearsold, and the conclusion is true because you vote.Since the predicted result is true, the conditionalstatement is true.29.The hypothesis is false, and the conclusion is true.The statement doesn’t say what happens if youare younger than 18 years old. It is possible thatyou vote in a school election. In this case, wecannot say that the statement is false. Thus, thestatement is true.30.The hypothesis is true, and the conclusion is false.Because the result is not what was predicted, theconditional statement is false.
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