Basic College Mathematics: An Applied Approach, Tenth Edition Solution Manual

331 Pages·2016·2.11 MB·English

by  Richard N. Aufmann

Student Solutions Manual

Basic College Mathematics
An Applied Approach

TENTH EDITION

Richard N. Aufmann
Palomar College

Joanne S. Lockwood
Nashua Community College

Prepared by

Carrie Green

Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain • United Kingdom • United States
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Contents

Chapter 1: Whole Numbers 1

Chapter 2: Fractions 31

Chapter 3: Decimals 65

Chapter 4: Ratio and Proportion 92

Chapter 5: Percents 107

Chapter 6: Applications for Business and Consumers 128

Chapter 7: Statistics and Probability 159

Chapter 8: U.S. Customary Units of Measurements 192

Chapter 9: The Metric System of Measurement 210

Chapter 10: Rational Numbers 229

Chapter 11: Introduction to Algebra 251

Chapter 12: Geometry 292

Final Exam 319

iii
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Chapter 1: Whole Numbers
Prep Test 23. Six million eight hundred forty-two thousand
seven hundred fifteen
1. 8
25. 357
2. 1 2 3 4 5 6 7 8 9 10
27. 63,780
3. a and D; b and E; c and A; d and B; e and F; f
29. 7,024,709
and C
Objective C Exercises
Section 1.1
31. 5000 + 200 + 80 + 7
Concept Check
33. 50,000 + 8000 + 900 + 40 + 3
1a. False
35. 200,000 + 500 + 80 + 3
b. True
37. 400,000 + 3000 + 700 + 5
c. True
39. No
d. True
Objective D Exercises
Objective A Exercises
41. 850
3. 43. 4000
45. 53,000
5.
47. 630,000
7. 37 < 49
49. 250,000
9. 101 > 87
51. 72,000,000
11. 2701 > 2071
Critical Thinking
13. 107 > 0
53. No. Round 3846 to the nearest hundred.
15. Yes
Section 1.2
Objective B Exercises
17. Three thousand seven hundred ninety Concept Check
19. Fifty-eight thousand four hundred seventy-
1. Addition Property of Zero
three
3. Associative Property of Addition
21. Four hundred ninety-eight thousand five
5. Commutative Property of Addition
hundred twelve
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2 Chapter 1 Whole Numbers
Objective A Exercises 33.
1 1 1 1
67,428
7. 28 32,171
+ 20,971
9. 125 120,570
11. 102 35.
1 1 1
76,290
13. 154 43,761
+87,402
15. 1489
207,453
17. 828
37.
1 1 1
20,958
19. 1 3,218
859
+ 42
+ 725
24,218
1584
39.
21. 1 1 1 1 31 91 2
36,925
37
+ 65,392
10,924
102,317
+ 621
11,974
23. 1 1
50,873
+ 28,453 41.
1 2 2
79,326 294
1029
7935
25.
2 2 + 65
878
9323
737
+ 189
43.
1804 11 21
97
27. 7,234
1
319 69,532
348 + 276
+ 912 77,139
1579
1 1
45. 9874
29.
1 2 + 4509
9409
3253 14,383
+ 7078
19,740 1 1 1
47. 3487
+5986
31.
1 2
2038 9473
2243
+ 3139 1 1 1 1
49. 9678
7420
+23,569
33,247
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Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.
Section 1.2 3
1 1 1 67. 281,421 ≈ 280,000
51. 4579
9,874 ≈ 10,000
+479
34,394 ≈ 30,000
5058
526,398 ≈ 530,000
1 2 + 94,631 ≈ + 90,000
53. 659
Cal.: 946,718 Est.: 940,000
55
+1278
69. Commutative Property of Addition
1992
Objective B Exercises
11 2
55. 34
71. Strategy To find the total number of
329
multiple births, add the four
8
+67,892 amounts (138,600 5877, 345,
68,263 and 46).
Solution 138,660
57. 1234 ≈ 1200
5877
9780 ≈ 9800 345
+ 6740 ≈ + 6700 + 46
144,928
Cal.: 17,754 Est.: 17,700
There were 144,928 multiple
59. 241 ≈ 200
births during the year.
569 ≈ 600
390 ≈ 400 73. Strategy To find the total gross income
+ 1672 ≈ + 1700 from the eight Harry Potter
Cal.: 2872 Est.: 2900
movies, add the eight
amounts.
61. 32,461 ≈ 32,000
9,844 ≈ 10,000 Solution 317,600,000
+ 59,407 ≈ + 59,000 262,000,000
Cal.: 101,712 Est.: 101,000 249,500,000
290,000,000
63. 25,432 ≈ 25,000
292,000,000
62,941 ≈ 63,000
302,000,000
+ 70,390 ≈ + 70,000
296,000,000
Cal.:158,763 Est.:158,000
+ 381,000,000
2,390,100,000
65. 67,421 ≈ 70,000
82,984 ≈ 80,000 The total gross income from
66,361 ≈ 70,000 the eight Harry Potter movies
10,792 ≈ 10,000
was $2,390,100,000.
+ 34,037 ≈ + 30,000
75. Strategy To find the total gross
Cal.: 261,595 Est.: 260,000
income from the two
highest-grossing Harry
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