Solve the equation by completing the square.x2 + 4x + 13 = 0
A. 1, -5
B. -2 ± 
i
C. -2 ± 3i
D. 2 ± 3i
Answer: C
Mathematics
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Find the probability of the following five-card poker hands from a 52-card deck. In poker, aces are either high or low.Full house (3 cards of one value, 2 of another value)
A. 
B. 
C. 
D. 
Mathematics
Find the foci and endpoints of each axis for the given ellipse.x2 + 
= 1
A. Foci: (0 , ± 8); vertices: (0, ± 8);
endpoints of the minor axis: (± 8, 0)
B. Foci: (0, ± 3
); vertices: (0, ± 8);
endpoints of the minor axis: (± 1, 0)
C. Foci: (± 3
, 0); vertices: (± 8, 0);
endpoints of the minor axis: (0, ± 2)
D. Foci: (0, ± 
); vertices: (0, ± 12);
endpoints of the minor axis: (± 1, 0)
Mathematics
Add and simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics
Subtract and simplify.
- 
A. 
B. 
C. 
D. 
Mathematics