By Alan S. Tussy
Algebra could be like a international language. yet one textual content supplies an interpretation you could absolutely comprehend. development a conceptual starting place within the "language of algebra," INTERMEDIATE ALGEBRA, 4e offers an built-in studying procedure that is helping you extend your reasoning skills because it teaches you the way to learn, write, and imagine mathematically. jam-packed with real-life functions of math, it blends educational methods that come with vocabulary, perform, and well-defined pedagogy with an emphasis on reasoning, modeling, verbal exchange, and expertise talents. The authors' five-step problem-solving strategy makes studying effortless. extra student-friendly than ever, the textual content deals a wealthy choice of scholar studying instruments. more suitable WebAssign on-line studying method is out there for another cost. With trouble-free AND INTERMEDIATE ALGEBRA, 4e, algebra is smart!
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Extra resources for Elementary and Intermediate Algebra, 4th Edition
The LCD is a product of prime factors, where each factor is used the greatest number of times it appears in any one factorization found in step 1. EXAMPLE 7 Subtract: 3 5 Ϫ 10 28 Strategy We will begin by expressing each fraction as an equivalent fraction that has the LCD for its denominator. Then we will use the rule for subtracting fractions with like denominators. Why To add or subtract fractions, the fractions must have like denominators. Solution To find the LCD, we find the prime factorization of both denominators and use each prime factor the greatest number of times it appears in any one factorization: 10 ϭ 2 ؒ 5 f LCD ϭ 2 ؒ 2 ؒ 5 ؒ 7 ϭ 140 28 ϭ 2 ؒ 2 ؒ 7 2 appears twice in the factorization of 28.
0 Ϫ 15 0 16 0 Ϫ223 p 0 0 Ϫ2 0 7 3 80. 666 . . 6 APPLICATIONS 81. DRAFTING Which dimensions of the aluminum bracket shown below are natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers? 9 in. Arc length 3π in. Arc length 2π in. 765 in. 1 3 – in. 8 15 –– in. 16 √89 in. 82. HISTORY Refer to the time line shown on the next page. a. What basic unit was used to scale the time line? b. What symbolism is used to represent zero? c. Which numbers could be thought of as positive and which as negative?
1,208 5. b t 87 174 487 974 2. The difference of 22 and 10 equals 12. 3. 1 VOCABULARY Hours Pay worked (dollars) 120 100 80 60 40 20 0 1 2 3 4 5 Hours worked 500 400 b. m ϩ 18 10. a. 30x b. 30x ϭ 600 cϪ7 cϪ7 ϭ 7c 11. a. b. 5 5 2 2 12. a. r ϭ b. r 3 3 12 ϩ 9t 13. What arithmetic operations does the expression 25 contain? What variable does it contain? 14. What arithmetic operations does the equation 4y Ϫ 14 ϭ 5(6) contain? What variable does it contain? 15. Construct a line graph using the data in the following table.
Elementary and Intermediate Algebra, 4th Edition by Alan S. Tussy