Solve for the variable.-8.2 + 2x - 6.6 + 4x - 2.9 = 5.1 + 7x + 1.3
A. x = -24.1
B. x = 24.1
C. x = 11.3
D. x = -11.3
Answer: A
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Use scientific notation to perform the following operations. Leave your answer in scientific notation form.(7 × 105)(2 × 102)
A. 1.4 × 107 B. 1.4 × 109 C. 1.4 × 1010 D. 1.4 × 108
Solve the problem.In one region, the September energy consumption levels for single-family homes are found to be normally distributed with a mean of 1050 kWh and a standard deviation of 250 kWh. For a randomly selected home, find the probability that the September energy consumption level is between 1100 kWh and 1225 kWh.
A. 0.0910 B. 0.2881 C. 0.3791 D. 0.1122
Solve the right triangle. Express angles in decimal degrees.
B = 44°, a = 55.8
A. A = 46°, b = 57.8, c = 80.3 B. A = 46°, b = 53.9, c = 77.6 C. A = 44°, b = 40.1, c = 53.9 D. A = 44°, b = 57.8, c = 40.1
Give the domain and range of the relation.y = 
A. domain: [0, ?); range: (-?, ?) B. domain: [-3, ?); range: [0, ?) C. domain: (-?, ?); range: (-?, ?) D. domain: (-?, ?); range: [-3, ?)