Find each product. Write the result in the form a + bi.(3 - 3i)(7 - 9i)
A. 48 + 6i
B. -6 - 48i
C. 27i2 - 48i + 21
D. -6 + 48i
Answer: B
Mathematics
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Perform the indicated operations.(2x2 + 5) - (2x2 - 6) + ( 4x2 - 6x)
A. 4x2 - 6x - 1 B. 8x2 + 6x - 1 C. 8x2 - 6x + 11 D. 4x2 - 6x + 11
Mathematics
Evaluate.Given that log x = 2 and log y = 3, find log xy3.
A. 11 B. 15 C. 18 D. 54
Mathematics
Solve the problem.The year y when sales were s million dollars for a particular electronics company can be modeled by the radical equation y = 1.3
- 5, where y = 1 represents 2001, and so on. Use the model to predict the sales for 2006 to the nearest tenth of a million.
A. $74.6 million B. $73.6 million C. $75.6 million D. $72.6 million
Mathematics
Find the average value over the given interval.y = 3x5 ; [-2, 2]
A. 64 B. 16 C. 8 D. 0
Mathematics