Beginning Algebra, 11th Edition

Find the value of each exponential expression. See Example 1. 22. 23. 24 ...

Write each word statement in symbols. See Example 5. 85.Fifteen is equal to five plus ten. 86.Twelve is equal to twenty minus ei ...

22 CHAPTER 1 The Real Number System OBJECTIVES A variableis a symbol, usually a letter such as x, y,orz, Variables used to repre ...

Evaluating Expressions Find the value of each algebraic expression for x= 5. EXAMPLE 1 1.3 Variables, Expressions, and Equations ...

(c) A number subtractedfrom 12 12 - x 24 CHAPTER 1 The Real Number System NOW TRY EXERCISE 3 Write each word phrase as an algebr ...

OBJECTIVE 4 Identify solutions of equations from a set of numbers.A setis a collection of objects. In mathematics, these objects ...

26 CHAPTER 1 The Real Number System Complete solution available on the Video Resources on DVD 1.3 EXERCISES Concept Check Choose ...

53.Suppose that the directions on a test read “Solve the following expressions.” How would you politely correct the person who w ...

28 CHAPTER 1 The Real Number System OBJECTIVES Real Numbers and the Number Line 1.4 1 Classify numbers and graph them on number ...

SECTION 1.4 Real Numbers and the Number Line^29 Equivalent Quotient Rational Number of Two Integers 0.23 (terminating decimal) o ...

Not all numbers are rational. For example, the square root of 2, written , cannot be written as a quotient of two integers. Beca ...

(c) Integers: 0, and 5 (d)Rational numbers: 5, 0, , 5, and 5.8 Each of these numbers can be written as the quotient of two integ ...

We indicate the additive inverse of a number by writing the symbol in front of the number. For example, the additive inverse of ...

Finding the Absolute Value Simplify by finding the absolute value. (a) (b) (c) (d) (e) (f ) (g) Parts (f ) and (g) show that abs ...

34 CHAPTER 1 The Real Number System 15.Every natural number is positive. 16.Every whole number is positive. Concept Check Give t ...

35.Concept Check Match each expression in Column I with its value in Column II. Choices in Column II may be used once, more than ...

36 CHAPTER 1 The Real Number System STUDY SKILLS You are ready to do your homework AFTERyou have read the corresponding textbook ...

SECTION 1.5 Adding and Subtracting Real Numbers^37 OBJECTIVES Adding and Subtracting Real Numbers 1.5 1 Add two numbers with the ...

Adding Two Negative Numbers Find each sum. (a) (b) - 8 + 1 - 122 =- 20 (c) - 15 + 1 - 32 =- 18 NOW TRY - 2 + 1 - 92 =- 1 |- 2 |+ ...

Adding Mentally Check each answer by adding mentally. If necessary, use a number line. (a) (b) (c) Find a common denominator. (d ...