Perform the indicated operation. Write the answer in the form a + bi.4(cos 135° + i sin 135°) ? 6(cos 225° + i sin 225°)
A. 24i
B. 24
C. -24
D. -24i
Answer: B
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Solve the problem. Round to the nearest dollar unless otherwise stated.A dry cleaner made the following cleaner purchases:Beginning inventory:187 units at $1.50April:407 units at $1.30May:468 units at $1.10December:176 units at $1.90Inventory at year end shows that 298 units remain. Find the inventory value using the weighted average, FIFO, and LIFO methods.
A. Weighted average: $399 FIFO: $566 LIFO: $447 B. Weighted average: $566 FIFO: $469 LIFO: $425 C. Weighted average: $566 FIFO: $469 LIFO: $447 D. Weighted average: $399 FIFO: $469 LIFO: $425
Provide an appropriate response.You wish to be a millionaire when you retire. To accomplish this you decide to open up an IRA and make equal monthly payments at the end of each month. If the IRA earns 7.5% compounded monthly and you know you will retire in 40 years, what must be the monthly payment to obtain your $1,000,000?
Fill in the blank(s) with the appropriate word(s).
Determine whether the system corresponding to the given augmented matrix is dependent or inconsistent. If it is dependent, give the solution.
A. dependent; z = 2 B. inconsistent C. dependent; (0, 0) D. dependent; (0, 2)
Provide an appropriate response.If a fraction simplifies to 0, what, if anything can you conclude about its numerator? What, if anything, can you conclude about its denominator?
A. Numerator can be anything, denominator is 0. B. Numerator is 0, denominator is 1. C. Numerator is 0, denominator is 0. D. Numerator is 0, denominator is not 0.