# Elementary and Intermediate Algebra (5th Edition) by R. David Gustafson, Alan S. Tussy

By R. David Gustafson, Alan S. Tussy

Algebra will be like a overseas language, yet user-friendly AND INTERMEDIATE ALGEBRA, 5E, grants the instruments and perform you must absolutely comprehend the language of algebra and the "why" in the back of challenge fixing. utilizing process and Why motives in labored examples and a six-step challenge fixing method, easy AND INTERMEDIATE ALGEBRA, 5E, will advisor you thru an built-in studying method that may extend your reasoning talents because it teaches you the way to learn, write, and imagine mathematically. believe convinced approximately your talents via extra perform within the textual content and better WebAssign. With common AND INTERMEDIATE ALGEBRA, 5E, algebra will make experience since it is not only concerning the x...it's additionally concerning the WHY.

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Additional resources for Elementary and Intermediate Algebra (5th Edition)

Sample text

Complete the table. Then use the data to construct a line graph. Scale each axis in units of 15°. Angle 1 (degrees) CHALLENGE PROBLEMS 67. Complete the formula. Angle 2 (degrees) tϭ sϩ s t 18 55 33 100 0 47 142 15 30 Angle 2 9 63. Many students misuse the word equation when discussing mathematics. What is an equation? Give an example. 64. Explain the difference between an algebraic expression and an equation. Give an example of each. 65. In this section, four methods for describing numerical relationships were discussed: tables, verbal models (words), graphs, and equations.

In this notation, the number 10 is an example of a constant because it does not change value. When multiplying a variable by a number, or a variable by another variable, we can omit the symbol for multiplication. For example, 10m means 10 и m xy means x и y We call 10m, xy, and 8abc algebraic expressions. 1 Algebraic Expressions The Language of Algebra Algebraic expressions are often simply called expressions. Variables and/or numbers can be combined with the operations of addition, subtraction, multiplication, and division to create algebraic expressions.

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? Pay (\$) 500 400 Write each expression without using a multiplication symbol or parentheses. Classify each item as an algebraic expression or an equation. 9. a. m ϩ 18 ϭ 23 Depth Minutes (feet) 600 Depth (feet) is the result of an addition. A is the result 1. A of a subtraction. A is the result of a multiplication. A is the result of a division.