Solve the system using the matrix inverse method.-5x + 3y = 83x - 6y = -30
A. {(2, 6)}
B. {(-2, -6)}
C. {(6, 2)}
D. {(-6, -2)}
Answer: A
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Consider the polar equation  FIGURE 1.png)
(a) Find the eccentricity and an equation of the directrix of the conic. (b) Identify the conic. (c) Sketch the curve.
Solve the problem.Estimate x when f(x) = 2 
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Refer to the given sets to identify the requested set. Describe the set using the roster method and state its cardinality. Let the universal set be U = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20}, 
and 
Find (A ? B)'
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