Basic Mathematics for College Students

72. 
    

    Subtract 5.9 from 7.001.

    
    


73. 
    
    
    
    74. 
        
    
    
    
    


74. 
    


75. 
    


76. 
    
    
    
    78. 
        
    
    
    
    


77. 
    
    
    
    80. 
        
    
    
    
    


78. 
    


79. 
    


80. 
    

    Find the sum of two and forty-three hundredthsand
    five and six tenths.

    
    


81. 
    

    Find the difference of nineteen hundredthsand
    six thousandths.

    
    


82. 
    
    
    
    86. 
        
    
    
    
    


83. 
    
    
    
    88. 
        
    
    
    
    


84. 
    

    2.002(4.6) 90. 0.005(8)

    
    

5 0.023 30 11.98

0 14.16.9 0  8 15  0 2.3(2.4) 0

 43 (0.0320.045)

16 (67.26.27)

7.8(6.5) 5.78(33.1)

202.234

 19.34

78.1

 7.81

0.00531.78 6

247.9 40 0.56

(3.46.6)7.3 3.4(6.67.3)

94. DRIVING DIRECTIONS Find the total distance of
    the trip using the information in the MapQuest
    printout shown below.

4.2 Adding and Subtracting Decimals 341

APPLICATIONS

91. RETAILING Find the retail price of each appliance
    listed in the following table if a department store
    purchases them for the given costs and then marks
    them up as shown.

Retail

Appliance Cost Markup price

Refrigerator $610.80 $205.00

Washing machine $389.50 $155.50

Dryer $363.99 $167.50

92. PRICING Find the retail price of a Kenneth Cole
    two-button suit if a men’s clothing outlet buys them
    for $210.95 each and then marks them up $144.95 to
    sell in its stores.


93. OFFSHORE DRILLING A company needs to
    construct a pipeline from an offshore oil well to a
    refinery located on the coast. Company engineers
    have come up with two plans for consideration, as
    shown. Use the information in the illustration to
    complete the table that is shown in the next column.

Design 1

Oil well Design 2

Refinery

2.32 mi

1.74 mi 2.90 mi

Pipe Pipe Total

underwater underground pipe

(mi) (mi) (mi)

Design 1

Design 2

1: Start out going EAST on SUNKIST AVE.

2: Turn LEFT onto MERCED AVE.

3: Turn Right onto PUENTE AVE.

4: Merge onto I-10 W toward LOS ANGELES.

5: Merge onto I-605 S.

6: Merge onto I-5 S toward SANTA ANA.

7: Take the HARBOR BLVD exit, EXIT 110A.

8: Turn RIGHT onto S HARBOR BLVD.

9: End at 1313 S Harbor Blvd Anaheim, CA.

0.0 mi

0.4 mi

0.3 mi

2.2 mi

10.6 mi

14.9 mi

0.3 mi

0.1 mi

Total Distance:? miles ®

START

END

110 AEXIT

SOUTH 5

SOUTH 605

WEST 10

95. PIPE (PVC) Find the outsidediameter of the plastic
    sprinkler pipe shown below if the thickness of the
    pipe wall is 0.218 inch and the inside diameter is
    1.939 inches.


96. pH SCALE The pH scale shown below is used to
    measure the strength of acids and bases in chemistry.
    Find the difference in pH readings between
    a. bleach and stomach acid.
    b. ammonia and coffee.
    c. blood and coffee.

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Stomach acid

1.75

Strong acid Neutral Strong base

Coffee

5.01

Blood

7.38

Ammonia

12.03

Bleach

12.7

Outside

diameter

Inside

diameter