course Mth 151

3.23. true

5. they both must be false

6. one must be true

9. true

10. false

12. true

15. true

18. true

20 because 7>3 and 9 = 9

21/ true

24. true

25. true

27. true

30 both sides have to be true

33. true

35. true

36. true

39. 4

40. 12

42. 20

45. 7

63. you can’t pay me now or you can’t pay me latter

65. it isn’t summer and there is snow

66. ½ isn’t a positive number and -9 isn’t less than zero

69. 5 - 1 doesn’t = 4 and 9 + 12 = 7

70. 3 > 10 or 7 = 2

72. neither the lawyer or client appeared in court

75. true

78. true

80. true

81. true