Solve the problem.Find an equation of the line containing the centers of the two circles x2 + y2 - 10x - 12y + 60 = 0
and x2 + y2 - 6x - 2y + 6 = 0
A. 7x - 8y - 13 = 0
B. 5x - 2y - 13 = 0
C. 5x + 2y - 13 = 0
D. -5x - 2y - 13 = 0
Answer: B
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Use the figure below to answer the following question(s).
The nearest-neighbor tour with starting vertex B is uniquely B, C, D, E, A, B
A. only if x > 5. B. only if x > 3. C. only if x > 2. D. only if x > 1. E. regardless of the value of x.
Use implicit differentiation to find the specified derivative at the given point.Find 
at the point 
for ex2cos yz = 0.
A. 
B. 
C. - 
D. - 
Find the equation of the parabola with the given focus and directrix.
A. y = 
x2
B. x = 
y2
C. y = x2
D. y = 24x2
Determine if the statement is a proportion.I. 
II. 
A. I is a proportion, II is not a proportion. B. I is not a proportion, II is a proportion. C. I and II are both proportions. D. Neither I nor II are proportions.