Use the multiplication property of equality to solve the equation.-14 = 2k

A. 1
B. 16
C. -7
D. -16

Answer: C

Mathematics

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Rotate the coordinate axes to change the given equation into an equation which has no cross product (xy) term. Identify the graph of the equation as a hyperbola, ellipse, parabola, a straight line, or parallel lines.3x2 + 2xy + y2  - 9x + 5y - 18 = 0

A. 4u2 - v2 - 11u + 7v - 18 = 0; Hyperbola
B. 4u2 - 11u - 18 = 0; Parallel lines
C. 4u2 - 11u + 7v - 18 = 0; Parabola
D. 4u2 + v2 - 11u + 7v - 18 = 0; Ellipse

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Mathematics

Find the exact value of the expression.tan  

A. -2 - 
B. 2 - 
C. 2 + 
D.  - 2

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Mathematics

Find the direction the parabola opens, the coordinates of the vertex, the equation of the axis of symmetry and draw the graph.x = -(y + 1)2 - 6

A.
 
opens left; vertex (1, 6);
axis of symmetry y = 6
B.
 
opens left; vertex (-6, 1);
axis of symmetry y = 1
C.
 
opens left; vertex (-6, -1);
axis of symmetry y = -1
D.

opens left; vertex (-1, -6);
axis of symmetry y = -6

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Mathematics

Rationalize the denominator and then simplify. ? ?

A.
B.
C.
D.
E.

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Mathematics