By Margaret L. Lial
Is there whatever extra attractive than an “A” in Algebra? to not the Lial group! Marge Lial, John Hornsby, and Terry McGinnis write their textbooks and accompanying assets with one target in brain: giving scholars all of the instruments they should be successful. With this revision, the Lial workforce has additional sophisticated the presentation and workouts through the textual content. they provide a number of interesting new assets for college students that may supply additional aid whilst wanted, whatever the studying surroundings (classroom, lab, hybrid, on-line, etc)–new examine abilities actions within the textual content, an elevated video software to be had in MyMathLab and at the Video assets on DVD, and extra!
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Extra info for Beginning and Intermediate Algebra (5th Edition)
15 … 15 84. 2 Exponents, Order of Operations, and Inequality 21 Write each word statement in symbols. See Example 5. 85. Fifteen is equal to five plus ten. 86. Twelve is equal to twenty minus eight. 87. Nine is greater than five minus four. 88. Ten is greater than six plus one. 89. Sixteen is not equal to nineteen. 90. Three is not equal to four. 91. One-half is less than or equal to two-fourths. 92. One-third is less than or equal to three-ninths. Write each statement with the inequality symbol reversed while keeping the same meaning.
C) 15 … 20 The statement 15 … 20 # 2 # 2 is true, since 15 6 40. (d) 25 Ú 30 Both 25 7 30 and 25 = 30 are false, so 25 Ú 30 is false. (e) 12 Ú 12 Since 12 = 12, this statement is true. (f) 9 6 9 (g) Since 9 = 9, this statement is false. 2 6 Ú 15 3 6 10 Ú 15 15 Get a common denominator. 6 Both statements 15 7 10 15 6 and 15 = 10 15 6 are false. Therefore, 15 Ú 2 3 is false. NOW TRY OBJECTIVE 5 NOW TRY EXERCISE 5 Write each word statement in symbols. (a) Ten is not equal to eight minus two. (b) Fifty is greater than fifteen.
How would you politely correct the person who wrote these directions? 54. Suppose that, for the equation 3x - y = 9, the value of x is given as 4. What would be the corresponding value of y? How do you know this? Decide whether the given number is a solution of the equation. See Example 4. 55. 4m + 2 = 6; 1 56. 2r + 6 = 8; 1 57. 2y + 31 y - 22 = 14; 3 58. 6x + 21x + 32 = 14; 2 59. 6p + 4p + 9 = 11; 1 5 60. 2x + 3x + 8 = 20; 61. 3r 2 - 2 = 46; 4 63. 12 5 62. 2x 2 + 1 = 19; 3 3 1 x + = 1; 2 8 4 64.