Answer the question.In which quadrants do the fourth roots of a complex number lie?
A. The first and third quadrants if the number is real and positive, and the second and fourth quadrants otherwise
B. The first and third quadrants if the number is real, and the second and fourth quadrants if the number is not real
C. All four quadrants
D. The first and second quadrants if the number is real, and the third and fourth quadrants if the number is not real
Answer: C
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For the curve r(t), write the acceleration in the form aTT + aNN.r(t) = (2t sin t + 2 cos t)i + (2t cos t - 2 sin t)j + 7k
A. a = 2T + 2tN
B. a = 
N
C. a = 2T + 
N
D. a = 2tN
A sign is hung on the wall of a building as in the figure below. Given the downward force and the horizontal force, determine the minimum required strength of a cable from point A to point B.
Downward force: 6 pounds; horizontal force: 8 pounds
A. 7 pounds B. 13 pounds C. 10 pounds D. 9 pounds
Find the area of the shaded region in the figure. Round results to the nearest unit.Find the area of the shaded portion of the circle. Use 3.14 for ?. Figure not drawn to scale.
A. 254.34 cm2 B. 17.415 cm2 C. 81 cm2 D. 46.17 cm2
Solve the problem. Round to two decimal places if needed.A sector of a circle has an area of 94 square feet. Find the central angle (in radians) that forms the sector if the radius is 8 feet.
A. 1.47 radians B. 2.94 radians C. 3008 radians D. 6016 radians