112 Chapter 2 Integers and Algebraic Expressions 49. 54 50. 44 51. 152 4 52. 142 4 53. 112 2 54. 112 3 55. 14 56. 15 Concept 4: Division of Integers For Exercises 57–72, divide the real numbers, if possible. (See Example 5.) 56 8 57. 60 132 58. 46 122 59. 60. 30 6 15 5 48 3 61. 62. 63. 84 142 64. 48 162 0 18 41 0 13 0 65. 66. 67. 68. 204 6 69. 1202 152 70. 1102 122 71. 72. 0 6 300 2 For Exercises 73–78, translate the English phrase to a mathematical expression. Then simplify. (See Example 6.) 73. The quotient of 100 and 20 74. The quotient of 46 and 23 75. 64 divided by 32 76. 108 divided by 4 77. 13 divided into 52 78. 15 divided into 45 79. During a 10-min period, a SCUBA diver’s depth changed by 60 ft. Find the average change in depth per minute. (See Example 7.) 80. When a severe winter storm moved through Albany, New York, the change in temperature between 4:00 P.M. and 7:00 P.M. was 27F.What was the average hourly change in temperature? 81. One of the most famous blizzards in the United States was the blizzard of 1888. In one part of Nebraska, the temperature plunged from 40F to 25F in 5 hr.What was the average change in temperature during this time? 82. A submarine descended from a depth of 528 m to 1804 m in a 2-hr period.What was the average change in depth per hour during this time? 83. Travis wrote five checks to the employees of his business, each for $225. If the original balance in his checking account was $890, what is his new balance? 84. Jennifer’s checking account had $320 when she wrote two checks for $150, and one check for $82.What is her new balance? 85. During a severe drought in Georgia, the water level in Lake Lanier dropped. During a 1-month period from June to July, the lake’s water level changed by 3 ft. If this continued for 6 months, by how much did the water level change? 86. During a drought, the change in elevation for a retention pond was 9 in. over a 1-month period. At this rate, what will the change in elevation be after 5 months? Mixed Exercises For Exercises 87–102, perform the indicated operation. 87. 18162 88. 24122 89. 18 162 90. 24 122 91. 192 1122 92. 36 1122 93. 90 162 94. 152 142
miller_prealgebra_2e_ch1_3
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