Find the LCD for the given fractions.
and 
A. 336
B. 112
C. 168
D. 672
Answer: A
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Determine the indicated arc or angle.Find 
.
A. 240° B. 180° C. 150° D. Not enough information.
Find all complex roots. Write the answer in polar form, with 0 ? ? ? 360°.Cube roots of 
- i
A. 2(cos 100° + i sin 100°), 2(cos 220° + i sin 220°), 2(cos 340° + i sin 340°)
B. 2(cos 110° + i sin 110°), 2(cos 230° + i sin 230°), 2(cos 350° + i sin 350°)
C. 
(cos 100° + i sin 100°), 
(cos 220° + i sin 220°), 
(cos 340° + i sin 340°)
D. 
(cos 110° + i sin 110°), 
(cos 230° + i sin 230°), 
(cos 350° + i sin 350°)
Solve using matrices.5x - 2y = -1 x + 4y = 35
A. (3, 9) B. (2, 8) C. (2, 9) D. (3, 8)
Find the indicated intercept(s) of the graph of the function.x-intercepts of f(x) = 
.
A. (-2, 0), (1, 0) B. (-1, 0), (2, 0) C. (-2, 0), (0, 0) D. (- 2, 0)