Perform the indicated operation. Write the result in the form a + bi.
A. 1 - i
B. - +
i
C. - +
i
D. 1 + i
Answer: B
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Find the indicated limit.
A. 8 B. 1 C. 16 D. Does not exist
Solve the given applied problems involving variation.The pitch P of a musical tone varies inversely as its wavelength W. One tone has a pitch of 479 vibrations per second and a wavelength of 8.8 ft. Find the wavelength of another tone that has a pitch of 492 vibrations per second.
A. 0.000037 ft B. 0.12 ft C. 26,780.5 ft D. 8.6 ft
Provide an appropriate response.If an ellipse has vertices at (-6, 0), (6, 0), (0, 2), and (0, -2), what is its domain? What is its range?
A. Domain: [-2, 2]; Range: [-6, 6] B. Domain: [-6, 2]; Range: [-2, 6] C. Domain: [0, 6]; Range: [0, 2] D. Domain: [-6, 6]; Range: [-2, 2]
Use the properties of logarithms to evaluate the expression without the use of a calculator.2log24
A. 2 B. 1 C. 4 D. 8