Solve the problem.Find an equation of the line containing the centers of the two circles x2 + y2 - 2x + 10y + 25 = 0
and x2 + y2 + 6x - 4y + 9 = 0
A. 7x - 4y - 13 = 0
B. -7x - 4y - 13 = 0
C. -3x + 2y - 13 = 0
D. -7x + 4y - 13 = 0
Answer: B
Mathematics
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A. x2 + 2x + 4 B. -3x2 + 2x + 4 C. -3x2 + 4 D. x2 - 2x - 4
Mathematics
Write your answer in lowest terms.The Brown family traveled 100 miles on a trip this summer. 30 miles of their trip was by train. What fraction of the trip was by train?
A. 
B. 100
C. 
D. 
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Solve the equation. Express radicals in simplest form.4n2 = -10n - 5
A. 
B. 
C. 
D. 
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Find the inverse of the one-to-one function.f(x) = 
A. f-1(x) = 
B. f-1(x) = 
- 
C. f-1(x) = 
- 
D. f-1(x) = 
- 
Mathematics