Write the complex number in polar form. Express the argument ? in degrees, with 0 ? ? ? 360°.7 + 7i
A. 7
(cos 45° + i sin 45°)
B. 7
(cos 315° + i sin 315°)
C. 7
(cos 135° + i sin 135°)
D. 7
(cos 225° + i sin 225°)
Answer: A
Mathematics
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Find the product.(5x2 + 5x - 3)(x2 + 4x + 2)
A. 5x4 + 20x3 + 30x2 - 2x - 6 B. 5x4 + 25x3 + 30x2 - 2x - 6 C. 5x4 + 20x3 + 27x2 - 2x - 6 D. 5x4 + 25x3 + 27x2 - 2x - 6
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Solve the problem.The minute hand of a clock is 5 inches long. What distance does its tip move in 20 minutes?
A. 
? in.
B. 
? in.
C. 
? in.
D. 
? in.
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Simplify.-(-6)
A. -1 B. 6 C. -6 D. 0
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