Calculate.-4 - |(-18) + (-13)|
A. 27
B. -27
C. -35
D. 35
Answer: C
Mathematics
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Plot the relation in the xy-plane.{(0, 3), (-3, -2), (4, 1), (-8, -10), (-1, 9)}
A. 
B. 
C. 
D. 
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Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
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Solve the equation by completing the square.x2 + 5x - 5 = 0
A. 
B. {-5 - 3
, -5 + 3
}
C. 
D. 
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Find the coordinates of the vertex and the direction of opening of each parabola.x = -(y + 2)2 + 2
A. (2, -2) opens left B. (-2, -2) opens left C. (2, 0) opens right D. (0, 2) opens right
Mathematics