Page 281 - Basic College Mathematics with Early Integers

258 C HAPTE R 3 I FRACTIONS

1
87. The area of the rectangle below is 12 square meters. 88. The perimeter of the square below is 23 feet. Find
4 the length of each side. 2
If its width is 2 meters, find its length.
7

Rectangle 2¢ meters Square

The following table lists three upcoming total eclipses of the Sun that will be visible in North America.The duration of
each eclipse is listed in the table. Use the table to answer Exercises 89 through 92.

89. What is the total duration for the three eclipses?
Total Solar Eclipses Visible from
North America
Date of Eclipse Duration (in Minutes)
90. What is the total duration for the two eclipses
2
August 21, 2017 2
3 occuring in odd-numbered years?
7
April 8, 2024 4
15
37
March 30, 2033 2
60
(Source: NASA/Goddard Space Flight Center)

91. How much longer will the April 8, 2024, eclipse be 92. How much longer will the April 8, 2024, eclipse be
than the August 21, 2017, eclipse? than the March 30, 2033, eclipse?

Objective Perform the indicated operations. See Examples 17 through 24.

2 3 5 2 1 3 5 2
93. -4 # 2 94. -3 , a -3 b 95. -5 - 19 96. 17 + a -14 b
5 10 6 3 8 4 9 3

2 3 7 5 5 1 3 1
97. -31 + 17 98. -31 - a -26 b 99. -1 # a -2 b 100. 1 , a -3 b
15 20 8 12 7 2 4 2
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7 5 2 3 3 1 3
101. 11 - 13 102. -20 + a -30 b 103. -7 , (-100) 104. -4 , 2
8 6 5 10 10 4 8