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Chapter 6 Test B Study Guide Answers; page 72-73

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1-3. See number line on board on class

4. yes because 6/2 = 3 and 3 is an integer

5. 116. 1 7. 199 8. 3 9. -9 10. -56

11. -1412. 26 13. -1814. -121

15. 10516. -156

17. -518. -13

19. 920. x = -5

21. y = -1222. a = -9

23. b = 5424. =

25. >26. < 27. >

28. -7/9; -9/7; 7/9

29. 7/4; 4/7; -7/4

30. -3/10; -10/3; 3/10

31. 16/5; 5/16; -16/5

- 32. [9 * (-15) * (-2) write original expression
= 9 * [(-15) * (-2)] associative property of multiplication

= 9 * 30 = 270 multiply -15 and -2 then multiply by 9

33. 4.7 + [(-9) + 3.3] write original expression

= 4.7 + [(3.3) + (-9)] commutative property of addition

= [4.7 + (3.3)] + (-9) associative property of addition

= 8 + (-9) = -1 add 4.7 and 3.3, then add -9.

- 34. 435. 6336. 67.237. 42
- 38. 3 units; 4 units; 12 square units
- 39. 4 units; 7 units; 28 square units

- 1. x – 10 = 12; x = the original price of the hat
- 2. x + 12; x = original temperature
- 3. coefficients: 2, 1; constants: -7; like terms: 2y and y
- 4. coefficients: 3 and 2; constants: -1; like terms 3r and 2r
- 5. coefficients: -5 and 8; constants: 10 and -2; like terms -5f and 8f ; 10 and -2

- 6. 6x + 1 7. 19d – 20
- 8. x – 4 = -12; x = -8
- 9. 3 + x = 11; x = 810. c
- 11. -7; (-2)(-7) = 14
- 12. 10; 2/5(10) = 4
- 13. 51 = c – 23; 74 acres
- 14. 26 = 1/3x; 78 acres
- 15. 68 years old 16. 4n + 9n = 39; n = 3
- 17. 2n + 7 = 15; n = 4

- 18. g < 14; open circle above the # 14 on the number line and shaded arrow to the left of 14
- 19. d ≤ 3; closed circle above the # 3 on the number line and shaded arrow to the left of 3
- 20. a ≥ 6221. h<36

- 22. the table above is the answer to #22
- 23. y = 3x; 36 feet 24. y = x
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