Beginning Algebra, 11th Edition

9.A quantity, of it, of it, and of it, added together, equals 33. What is the quantity?

(Source:Rhind Mathematical Papyrus.)

10.A quantity, of it, of it, and of it, added together, equals 93. What is the quantity?

(Source:Rhind Mathematical Papyrus.)

Solve each problem. See Example 5in Section 2.7 ( pages 143 and 144).

1

3

1

2

3

4

1

7

1

2

2

3

472 CHAPTER 7 Rational Expressions and Applications

16.In 2008, Kasey Kahne drove his Dodge to victory in the Coca-Cola 600 (mile) race. His

rate was 135.722 mph. What was his time (to the nearest thousandth of an hour)? (Source:

World Almanac and Book of Facts.)

11.In 2007, British explorer and endurance

swimmer Lewis Gordon Pugh became

the first person to swim at the North Pole.

He swam 0.6 mi at 0.0319 mi per min in

waters created by melted sea ice. What

was his time (to three decimal places)?

(Source: The Gazette.)

12.In the 2008 Summer Olympics, Britta

Steffen of Germany won the women’s

100-m freestyle swimming event. Her

rate was 1.8825 m per sec. What was her

time (to two decimal places)? (Source:

World Almanac and Book of Facts.)

13.Tirunesh Dibaba of Ethiopia won the

women’s 5000-m race in the 2008

Olympics with a time of 15.911 min.

What was her rate (to three decimal

places)? (Source: World Almanac and

Book of Facts.)

14.The winner of the women’s 1500-m run

in the 2008 Olympics was Nancy Jebet

Langat of Kenya with a time of 4.004

min. What was her rate (to three decimal

places)? (Source: World Almanac and

Book of Facts.)

15.The winner of the 2008 Daytona 500

(mile) race was Ryan Newman, who

drove his Dodge to victory with a rate of

152.672 mph. What was his time (to the

nearest thousandth of an hour)? (Source:

World Almanac and Book of Facts.)

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