Algebra Trigonometry

Download Algebra by Laurie Boswell, Timothy D. Kanold, Lee Stiff, Holt Mcdougal PDF

By Laurie Boswell, Timothy D. Kanold, Lee Stiff, Holt Mcdougal

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New Developments in Lie Theory and Its Applications: Seventh Workshop on Lie Theory and Its Applications November 27- December 1, 2009 Cordoba, Argentina

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54 3. 38 THE LEFT-TO-RIGHT RULE Operations that have the same priority, such as multiplication and division or addition and subtraction, are performed using the left-to-right rule, as shown in Example 2. EXAMPLE 2 Using the Left-to-Right Rule a. 24 º 8 º 6 = (24 º 8) º 6 Work from left to right. = 16 º 6 = 10 b. 15 • 2 ÷ 6 = (15 • 2) ÷ 6 Work from left to right. = 30 ÷ 6 =5 STUDENT HELP Study Tip In part (c) of Example 2, you do not perform the operations from left to right because division has a higher priority than addition and subtraction.

7 pounds from 1970 to 1975. Chapter 1 Connections to Algebra GOAL 2 USING GRAPHS TO ORGANIZE DATA One way to organize data is with a bar graph. The bars can be either vertical or horizontal. Example 2 shows a vertical bar graph of the data from Example 1. RE FE L AL I Eating Habits EXAMPLE 2 Interpreting a Bar Graph The bar graph shows the total amount of dairy products, vegetables, and fruit consumed by Americans in a given year. If you glance at the graph, it appears Americans ate seven times the amount of dairy products, vegetables, and fruit in 1995 as compared with 1970.

43–46 Example 5: Ex. 3 Order of Operations 19 EXPRESSIONS WITH FRACTION BARS Evaluate the expression. 9•2 38. ᎏ ᎏ 4 + 32 º 1 41. 53 • 2 40. ᎏ ᎏ 1 + 62 º 8 13 º 4 39. ᎏ ᎏ 18 º 42 + 1 Writing You decide to buy two rings from an outdoor vendor. 89. 48. The sales tax is 8%. 37. What mistake did the vendor make? 42. LOGICAL REASONING Which is correct? Explain. (9 º 7)2 + 3 A. ᎏᎏ = (9 º 7)2 + 3 ÷ 5 5 (9 º 7)2 + 3 B. ᎏᎏ = [(9 º 7)2 + 3] ÷ 5 5 ORDER OF OPERATIONS In Exercises 43–46, two calculators were used to evaluate the expression.

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