Write the complex number in rectangular form.3(cos 
+ i sin 
)
A. - 
+ 
i
B. - 
+ 
i
C. 
+ 
i
D. 
+ 
i
Answer: B
Mathematics
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Simplify the complex fraction.
A. 
B. 
C. 
D. 
Mathematics
Perform the requested evaluation.Given f(x) = -5x2 - 6x + 4, find f(-4).
A. -56 B. 48 C. -82 D. -52
Mathematics
A diagonal brace is to be placed in the wall of a room. The height of the wall is 7 ft, and the wall is 15 ft long. What is the exact length of the brace? ?
A. 
B. 
C. 17
D. 
E. 13
Mathematics
Use translations of one of the basic functions to sketch a graph of y = f(x) by hand.y = (x - 5)2 - 6
A. 
B. 
C. 
D. 
Mathematics