D.22. CHAPTER 22
Exercise 1
1. 2
3. 3
5. −7.90
7. Δx = 3, Δy = 3
9. Δx = 9, Δy = −12
11. 3
13. 9
15. 6.60
17. 3.34
19. 6.22
21. 3/2
23. 3
25. −2
27. −5/9
29. 4.66
31. 1.615
33. −1.080
35. 61.5°
37. 110°
39. 93.8°
41. 41.3°
43. 45.0°
45.
47. −1.85, 0.541
49. −5.372, 0.1862
51. 45°
53. 64°
55. 78.6 mm
57. 2008 ft
59. 1260 m
61. 0.911°
63. 33.7°
Exercise 2
15. y = 2x −2
17. 4x + y + 3 = 0
19. 5x − y + 3 = 0
21. x + 3y + 15 = 0
23. 5x − y + 15 = 0
25. x + 5y −6 = 0
27. y −2 = 0
29. 3x −4y + 11 = 0
31. 3x −5y + 15 = 0
33. 3x − y + 2 = 0
35. 2x + y −6 = 0
37.
41. F = kL − kL0
43. (a) 10.5 m/s; (b) 64.3 m/s
45. 150.1 Ω
49. P = 20.6 + 0.432x; 21.8 ft
51. t = −0.789x + 25.0; x = 31.7 cm; m = −0.789
53. Y = P + t (S − P)/L; $5555
Exercise 3
1. x2 + y2 = 49
3. (x − 2)2 + (y − 3)2 = 25
5. (x −5)2 + (y + 3)2 = 16
7. C(0, 0); r = 7
9. C(2, −4); r = 4
11. C(3, −5); r = 6
13. x2 + y2 + 4x + 6y −3 = 0
15. x2 + y2 − 10x + 8y −1 = 0
17. (x −4)2 + y2 = 16; C(4, ...
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