Page 151

hendricks_beginning_algebra_1e_ch1_3

Section 2.5 Formulas and Applications from Geometry 149 66. (4a – 22)° (2a + 10)° 67. (6a + 2)° (7a – 8)° 68. (5a – 105)° (3a – 15)° Find the measure of each angle in the triangle that is illustrated or described. (See Objective 6.) 69. (a + 5)° (4a – 5)° a° 70. (6a – 1)° a° (5a + 1)° 71. In triangle ABC, the measure of angle B is 8° more than the measure of angle A. The measure of angle C is 37° more than the measure of angle A. Find the measure of each angle in the triangle. 72. In triangle ABC, the measure of angles A and B are the same. The measure of angle C is 105° larger than the each of angle A and B. Find the measure of each angle in the triangle. Mix M ’Em Up! Find the requested information. 73. Use the formula A = P(1 + r)t to find the value of A if $5000 is invested for 2 yr at 4% annual interest. 74. Use the formula A = P(1 + r)t to find the value of A if $13,500 is invested for 5 yr at 5.5% annual interest. 75. If the area of a rectangle is 1290 m2 and the width is 43 m, find the perimeter of the rectangle. 76. If the area of a rectangle is 240 mm2 and the length is 40 mm, find the perimeter of the rectangle. 77. The revenue R, unit price p, and sale level x of a product are related by the formula R = xp. Use this formula to find R if p = $26 and x = 120. 78. The revenue R, unit price p, and sale level x of a product are related by the formula R = xp. Use this formula to find R if p = $15 and x = 65. 79. The formula to find the volume of a cylinder with radius r and height h is V = πr2h. Use π ≈ 3.14 to find V if r = 3 in. and h = 2 in. 80. The formula to find the volume of a cylinder with radius r and height h is V = πr2h. Use π ≈ 3.14 to find V if r = 2 ft and h = 7 ft. 81. Use the formula d = rt to find d if r = 45 mph and t = 3.2 hr. 82. Use the formula d = rt to find r if d = 244.8 mi and t = 5.1 hr. 83. Solve y=- 3 2 x + 3 for x. 84. Solve y = 7 2 x - 21for x. 85. The formula to find the volume of a cylinder with radius r and height h is V = πr2h. Use π ≈ 3.14 to find h if V = 1384.74 m3 and r = 4.2 m. 86. The formula to find the volume of a cylinder with radius r and height h is V = πr2h. Use π ≈ 3.14 to find h if V = 615.44 yd3 and r = 3.5 yd. 87. Use the formula A = P(1 + r)t to find the value of P if $23,500 is in an account at the end of 8 yr at 5% annual interest. 88. Use the formula A = P(1 + r)t to find the value of P if $16,500 is in an account at the end of 4 yr at 5.9% annual interest. 89. Solve R = xp for x. 90. Solve V = IR for I. 91. Solve 0.4x - y = 100 for x. 92. Solve x + 0.2y = 12 for y. 93. Find the measure of an angle whose complement is 12° less than the measure of the angle. 94. Find the measure of an angle whose supplement is 40° more than three times the measure of the angle. 95. Solve C = 6l + 4w for w. 96. Solve P = 2l + 2w for l. 97. Find the measure of each angle labeled in the figure. (10a – 2)° (5a – 13)° 98. Find the measure of each angle labeled in the figure. (a + 10)° (9a – 39)°


hendricks_beginning_algebra_1e_ch1_3
To see the actual publication please follow the link above