Basic Mathematics for College Students

1.divisor, quotient, dividend 3. a.5.26 b.0.008

5. a. b. 7. 9.thousandths


6. a.left b.right 13.moving the decimal points in the
   divisor and dividend 2 places to the right 15.2.1 17.9.2
   19.4.27 21.8.65 23.3.35 25.4.56 27.0.46
   29.0.39 31.19.72 33.24.41 35. 280  70 28  7 4


7. 400  8 50 39.4,000  50 400  5 80
   41.15,000  5 3,000 43.4.5178 45.0.003009 47.12.5
   49.545,200 51. 53.4.04 55.20,325.7


8. 59.5.162 61.0.1 63.3.5 65.58.5
   67.2.66 69.7.504 71.0.0045 73.0.321 75.


9. 
   
   
   
   79. 81.9.75 83.789,150 85.0.6
       87.13.60 89.0.0348 91.1,027.19 93.0.15625
       95.280 slices 97.2,000,000 calculations 99.500 squeezes
       101.11 hr, 6 P.M. 103.1,453.4 million trips 105.0.231 sec
   
   
   
   


10. a. 5 b. 50

1.equivalent 3.terminating 5. 7.zeros 9.repeating

11. a.0.38 b.0.212 13. a. b. 15.0.5
    17.0.875 19.0.55 21.2.6 23.0.5625 25.0.53125
    27.0.6 29.0.225 31.0.76 33.0.002 35.3.75
    37.12.6875 39. 41. 43. 45.


12. 
    
    
    
    49. 51.0.23 53.0.49 55.1.85
    
    
    
    


13. 59.0.152 61.0.370


14. 
    

65.

67. 69. 71. 73. 75.6.25, ,

77. 
    
    
    
    79. 
        
        
        
        81. 
            
            
            
            83. 
                
                
                
                85. 1
                    87.0.57 89.5.27 91.0.35 93. 95.
                    97.0.068 99.7.305 101.0.075 103.0.0625, 0.375,
                    0.5625, 0.9375 105. in. 107.23.4 sec, 23.8 sec, 24.2 sec,
                    32.6 sec 109.93.6 in^2 111.$7.02 119. a.{0, 1, 2, 3, 4, 5,
                    6, 7, 8, 9} b.{2, 3, 5, 7, 11, 13, 17, 19, 23, 29} c.{..., , ,
                    ,0,1,2,3,...}
                
                
                
                
            
            
            
            
        
        
        
        
    
    
    
    

1.square 3.radical 5.perfect 7. a.25, 25 b. ,

9. a. 7 b. 2 11. a. 1 b. 0 13.Step 2: Evaluate all
   exponential expressions and any square roots.


10. 
    


11. a.square root b.negative 19.7, 8 21.5 and
    23.4 and  4 25. 4 27. 3 29. 12 31. 7 33. 31

 5

− 5 − 4 − 3 − 2 −10 12 34 5

• 3 7

1

16

1

16

Study Set Section 4.6 (page 391)

 1

 3  2

3

40

 0.48  2.55

3

22

19

60

37

90



8

9

,

6

7

,0.81

6

1

2

19

3

− 5 − 4 − 3 − 2 −10 12 34 5

–3.5 –1 0.2

(^4) –
5 3.875
− 5 − 4 − 3 − 2 −10 12 34 5
–3.83 –0.750.6^1
(^3) –
4
 1.08
 0.45  0.60
0.1 0.583 0.07 0.016
77
100
7
10
Study Set Section 4.5 (page 382)
 122.02  2.4
 1.5
 0.00003
 8.62
10
10
13 106.6 371 1669.5
Study Set Section 4.4 (page 368) 35. 63 37. 39. 41. 43.0.8 45.
47.0.3 49. 7 51. 16 53. 55. 57. 20

59. 
    
    
    
    61. 
        
        
        
        63. 43 65. 75 67. 69.
        
        
        
        
    
    
    
    


60. 
    
    
    
    73. 
        
        
        
        75. 77.9.56 79.
        
        
        
        
    
    
    
    


61. 15 83. 7 85.1, 1.414, 1.732, 2, 2.236, 2.449, 2.646,
    2.828, 3, 3.162 87.3.87 89.8.12 91.4.904 93.


62. a.5 ft b.10 ft 97.127.3 ft 99.42-inch screen
    109.82.35 111.39.304


63. a.0.67, b.


64. a.7 hundredths b. 3 c. 8 d.5 ten-thousandths


65. 10  6  4.two and three

tenths, 5.negative six hundred fifteen and fifty-nine

hundredths, 6.six hundred one ten-thousandths,

7.one hundred-thousandth, 8.100.61

9.11.997 10.301.000016 11. 12. 13. 14.

15.

16. a.true b.false c.true d.true 17.4.58
    18.3,706.082 19.0.1 20.88.1 21.6.7030
    22.11.3150 23.0.222228 24.0.63527 25.$0.67
    26.$13 27.Washington, Diaz, Chou, Singh, Gerbac
    28.Sun: 1.8, Mon: 0.6, Tues: 2.4, Wed: 3.8 29.66.7
    30.45.188 31.15.17 32.28.428 33.1,932.645
    34.24.30 35.7.7 36.3.1 37.4.8 38.29.09
    39.25.6 40.4.939 41. a. 760 b. 280 42.10.75 mm
    43.$48.21 44.8.15 in. 45.15.87 46.197.945
    47.0.0068 48.2,310 49.151.9 50.0.00006
    51.90,145.2 52.0.002897 53.0.04 54.0.0225
    55.10.61 56.25.82 57.0.0001089 58.115.741


17. a.9,600,000 km^2 b.2,310,000,000 60. a.1,600
    b.91.76 61.98.07 62.$19.43 63.0.07 in. 64.68.62 in.^2
    65.9.3 66.10.45 67.1.29 68.41.03 69.6.25
    70.0.053 71. 63 72.0.81 73.0.08976 74.0.00112
    75.876.5 76.770,210 77.4,800  40 480  4 120
    78.27,000  9 3,000 79.12.9 80.776.86 81.13.95
    82.20.5 83.$8.34 84.0.51 ppb 85.14 servings
    86.9.5 revolutions 87.0.875 88.0.4 89.0.5625
    90.0.06 91. 92. 93.3.056 94. 95.0.58
    96.1.03 97. 98. 99.0.3,


18. 
    


19. 
    
    
    
    102. 103.6.24 104.0.175
    
    
    
    


20. 93 106.7.305 107.34.88 in.^2 108.$22.25
    109.5 and  5 110.7, 7 111. 7 112. 4 113. 10

307

300

    1

7

300

11

15

− 5 − 4 − 3 − 2 −10 12 34 5

–3.3 – 1.125^2

––^9

10

(^3) –
4
0.3
10
33
,
0.54  1.3 0.57
–5 –4–3 –2 –1 0 1 2 3 4 5
–2.7 –2.1 –0.8 1.55
1
100,000
601
10,000
 615
59
100
2
3
10
4
10

5
100

2
1,000

3
10,000
0.8
67
100
Chapter 4 Review (page 395)
 3.332
  140  1.4
7
20
 10
 140  48  7  1
 16  3
  0.9
1
9

4
3
2
5
A-42 Appendix V Answers to Selected Exercises