Write in terms of i.
A. -3i
B. -3
C. 3
D. 3i
Answer: D
Mathematics
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Use counting to determine the whole number that corresponds to the cardinality of the set.A = {x|x ? N and (x + 6)(x + 4) = 0}
A. Infinite B. n(A) = 4 C. n(A) = 2 D. n(A) = 6
Mathematics
Write the complex number in rectangular form.9 cis 240°
A. 
- 
B. - 
+ 
C. - 
- 
D. 
- 
Mathematics
Sketch the graph of the function.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics
Solve the system of equations.x1 - x2 + x3 = 8x1 + x2 + x3 = 6x1 + x2 - x3 = -12
A. (2, -1, 9) B. (-2, -1, -9) C. (2, -1, -9) D. (-2, -1, 9)
Mathematics