Beginning Algebra, 11th Edition

SECTION 2.5 Formulas and Additional Applications from Geometry^127 (volume of a pyramid); , 36. ;, (volume of a sphere); 38. ...

48.The Rogers Centre in Toronto, Canada, is the first stadium with a hard-shell, retractable roof. The steel dome is 630 ft in d ...

SECTION 2.5 Formulas and Additional Applications from Geometry^129 Solve each formula for the specified variable. See Examples 6 ...

130 CHAPTER 2 Linear Equations and Inequalities in One Variable OBJECTIVES Ratio, Proportion, and Percent 2.6 1 Write ratios. 2 ...

SECTION 2.6 Ratio, Proportion, and Percent^131 To find the best buy, write ratios comparing the price for each size of jar to th ...

132 CHAPTER 2 Linear Equations and Inequalities in One Variable NOTE If then or This means that the two proportions are equivale ...

SECTION 2.6 Ratio, Proportion, and Percent^133 Solving an Equation by Using Cross Products Solve the equation Cross products Dis ...

134 CHAPTER 2 Linear Equations and Inequalities in One Variable Basic percent equation Converting Between Decimals and Percents ...

SECTION 2.6 Ratio, Proportion, and Percent^135 NOW TRY EXERCISE 8 Solve each problem. (a)What is 20% of 70? (b)40% of what numbe ...

Write a ratio for each word phrase. Write fractions in lowest terms. See Example 1. 3.40 mi to 30 mi 4.60 ft to 70 ft 5.120 peop ...

SECTION 2.6 Ratio, Proportion, and Percent^137 45.Eight quarts of oil cost $14.00. How much do 5 qt of oil cost? 46.Four tires c ...

Two triangles are similarif they have the same shape (but not necessarily the same size). Similar triangles have sides that are ...

SECTION 2.7 Further Applications of Linear Equations^139 Convert each decimal to a percent. See Examples 7(c) and 7(d). 83.0.80 ...

Using Percents to Find Percentages (a)If a chemist has 40 L of a 35% acid solution, then the amount of pure acid in the solution ...

SECTION 2.7 Further Applications of Linear Equations^141 Step 3 Write an equation.The number of liters of pure acid in the 70% s ...

Step 3 Write an equation.Multiply amount by rate to get the interest earned. Interest interest total at 6% plus at 7% is interes ...

SECTION 2.7 Further Applications of Linear Equations^143 Step 3 Write an equation.Multiplying the number of bills by the denomin ...

(c) At the 2008 Olympic Games, Australian swimmer Leisel Jones set an Olympic record of 65.17 sec in the women’s 100-m breaststr ...

SECTION 2.7 Further Applications of Linear Equations^145 Solving a Motion Problem Two planes leave Memphis at the same time. One ...

8.The population of Alabama in 2007 was about 4,628,000, with 26.5% represented by African-Americans. What is the best estimate ...