Solve the system by elimination.x2 + y2 = 181x2 - y2 = -19
A. (-9, -10), (-10, -9)
B. (9, 10), (10, 9), (-9, -10), (-10, -9)
C. (9, -10), (9, 10)
D. (9, 10), (-9, 10), (9, -10), (-9, -10)
Answer: D
Mathematics
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Perform the indicated operations.9
+ 14
A. 23
B. -5
C. 6
D. -24
Mathematics
Find the standard equation of the indicated hyperbola.Vertices at (0, ±3), foci at (0, ±10)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Identify the number as real, complex, pure imaginary, or nonreal complex. More than one of these descriptions may apply.
A. Complex B. Nonreal complex C. Complex, pure imaginary, nonreal complex D. Real, complex
Mathematics
Solve the problem.Suppose that f(x) = 3x + 7. If f(x) = 1/34, what is x?
A. -3 B. 7 C. -7 D. 3
Mathematics