Solve the equation by the method of your choice. Simplify irrational solutions, if possible.x2 + 18x + 66 = 0
A. {-18 ± 
}
B. {-9 ± 
}
C. {9 ± 
}
D. {9 ± 
}
Answer: B
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Provide an appropriate response.Earthquakes usually cause damage in all but which one of the following related ways?
A. Collapsed building due to inferior construction B. Fires caused by heat from the earth's interior. C. Landslides D. Tsunamis
Convert the degree measure to radians, correct to four decimal places. Use 3.1416 for ?.72°
A. 1.2566 B. 1.0566 C. 0.9566 D. 1.1566
Solve the equation in the complex number system.x3 - 27i = 0
A. 3(cos 60° + i sin 60°), 3(cos 180° + i sin 180°), 3(cos 300° + i sin 300°) B. 3(cos 30° + i sin 30°), 3(cos 150° + i sin 150°), 3(cos 270° + i sin 270°) C. 1, -1, -i D. 3(cos 0° + i sin 0°), 3(cos 120° + i sin 120°), 3(cos 240 + i sin 240°)
Complete the identity.Complete the reciprocal identity: 
= 
A. csc ? = 
B. cos ? = 
C. tan ? = 
D. sec ? = 