Unit 5, Chapter 6 Review, & Chapter 10, Exercises 10.1 REFERENCE ATTACHED Chapter 6 Chapter Review ANSWERS 14, 16, 38, 44, 50, 62, 64, 70, 74, 76, 96, 100 14. z = 25 x= 155 y = 155 16. x = 42 y = 42 z = 138 38. 90ft 44. 140 sq m. 50. 208 + 208 + 832 = 1,248 sq cm. 62. 8 64. 2/5 70. 127.279 rounded to the nearest tenth = 127.3 ft 74. n = 17.4 76. x = 0.83 in. y = 2.16 in. 96. 4/9 because 4/9 x 4/9 = 16/81 100. h= 19.72 Chapter 10 Exercise 10.1 10.1 Exercise Set ANSWERS: 2(a), 2(b), 2(c), 2(d), 2(e), 2(f), 2(g), 2(h) ANSWERS: 4, 6, 8, 12, 14, 20(a), 20(b), 22, 24, 26, 28, 30, 36, 42(a), 42(b) 2. a) I b) Lies on the Y axis c) II d) III e) Lies on the X axis f) IV g) II h) IV 4. (3.5, 0) 6. (-1, 3) 20. 8. (0, -1) 12. (-2, 3) 14. (1, -1) a) (8.00, 1) , (7.50, 10) , (6.50, 25) , (5.00, 50) , (2.00, 100) b) Given the ordered pair (2.00, 100). This means that if 100 boards are purchased, the cost per board is $ 2.00. 22. (-11, -2) , (4, 1) x = -11 y=1 24. (-10, -4) , (15, 1) y = -4 x = 15 26. x = 0, y = 27, x = -0.22 as shown in the box below: a) b) c) x 0 -3 -0.22 y 0 27 2 28. x = 4, y = 4, x = 7 as shown in the box below: a) b) c) x 4 0 7 y 0 4 -3 30. y = 0, y = -2, x = 3 as shown in the box below: a) b) c) x 0 -6 3 y 0 -2 1 36. y = -0.5, y = -0.33, x = -3 as shown in the box below: a) b) c) x 0 1 -3 y -0.5 -0.33 -1 42 a) y = 9, y = 9.25, y = 10.25, y = 11.5 as shown in the box below: x y 0 9 i 1 9.25 ii 5 10.25 iii 10 11.25 iv b) x = 13 The employee must produce 13 units each hour to earn an hourly wage of $12.25