Find the power of i.i46
A. 1
B. -i
C. -1
D. i
Answer: C
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Solve.A credit company allocates 8-digit account numbers such as 1122-3421 where the digits 1 through 9 are used. How many different account numbers can there be?
A. 220,345 B. 13,440 C. 40,320 D. 43,046,721
Solve triangle, if possible. Round angles an side lengths to the nearest tenth when necessary. 
A. C = 103°, a ? 10.8, b ? 19.1 B. C = 97°, a ? 10.6, b ? 18.8 C. C = 103°, a ? 53.3, b ? 30.1 D. C = 103°, a ? 19.1, b ? 10.8
Solve the problem.A pulley with a diameter of 20 inches is driven by a belt which is moving 1231 feet per minute. To the nearest unit, how many revolutions per minute are made by the pulley?
A. 247 revolutions per min B. 333 revolutions per min C. 340 revolutions per min D. 235 revolutions per min
Perform the indicated operation. Write the result in the form a + bi.(
- 
i) + (
+ 
i)
A. 3 - 2i B. - 1 + 2i C. 1 + i D. 4 - 3i