Solve the equation.x2 - x = 12
A. x = 1, 12
B. x = -3, 4
C. x = -3, -4
D. x = 3, 4
Answer: B
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Use the change-of-base formula to find the logarithm. Round your answer to four decimal places. log100 30
A. 3.4012 B. 0.7386 C. 1.354 D. 4.6052
A survey showed that students had these preferences for instructional materials. Use the graph to answer the question.
About how many students would you expect to prefer TV in a school of 650 students?
A. About 78 students B. About 117 students C. About 12 students D. About 130 students
Find the indicated roots. Write the answer in trigonometric form.Cube roots of 125(cos 288° + i sin 288°)
A. 5(cos 96° + i sin 96°), 5(cos 216° + i sin 216°), 5(cos 336° + i sin 336°) B. 5(cos 186° + i sin 186°), 5(cos 246° + i sin 246°), 5(cos 126° + i sin 126°) C. 5(cos 96° + i sin 96°), 5(cos 216° + i sin 216°), 5(cos 216° + i sin 216°) D. 5(cos 96° + i sin 96°), 5(cos 156° + i sin 156°), 5(cos 36° + i sin 36°)
Solve the equation.-8x - 16 + 9x = -9
A. 25 B. -25 C. -7 D. 7