Solve the equation.21.8 = 14.7 + m
A. m = 7.1
B. m = 36.5
C. m = -36.5
D. m = -7.1
Answer: A
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Write the number in trigonometric form. Let 0° ? ? < 360°.5 + 5i
A. 5
(cos 45° + i sin 45°)
B. 5
(cos 225° + i sin 225°)
C. 5
(cos 135° + i sin 135°)
D. 5
(cos 315° + i sin 315°)
Find the real solutions of the equation. Use a calculator to express the solutions rounded to two decimal places.?(1 + x)2 - 5 = 2(1 + x)
A. {-1.62, -0.62} B. {-0.62, 0.82} C. {0.62, -1.98} D. {-0.62, -0.18}
Write the system of equations associated with the augmented matrix. Do not solve.
A. -3x - 7y = 0 3x - 2y = 0 B. -3x - 7y = -2 -2x + 3y = 3 C. -3x - 7y = -2 3x - 2y = 3 D. -7x - 3y = -2 3x - 2y = 3
Determine the vertex, focus, and directrix of the parabola and sketch its graph.x2 - 12x = 12y - 96
A. vertex: (6, 5)
focus: (9, 5)
directrix: x = 3
B. vertex: (6, 5)
focus: (3, 5)
directrix: x = 9
C. vertex: (6, 5)
focus: (6, 2)
directrix: y = 8
D. vertex: (6, 5)
focus: (6, 8)
directrix: y = 2