Add or subtract the complex numbers(8 + 4i) - (-9 + i)
A. -17 - 3i
B. -1 + 5i
C. 17 + 3i
D. 17 - 3i
Answer: C
Mathematics
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Solve the system of equations.x + 4y + 3z = 11 4y + 4z = 16 z = 3
A. {(-2, 3, 1)} B. {(-2, 1, 3)} C. {(3, 1, -2)} D. ?
Mathematics
Subtract.
A. 8 B. 5 C. 6 D. 7
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Find the exact value under the given conditions.Given sin ? = - , with ? in quadrant IV, and tan ? = -
, with ? in quadrant II. Find cos (? + ?).
A. -
B.
C.
D.
Mathematics
Graph the ellipse and locate the foci.4x2 + 9y2 = 36
A. foci at (, 0) and (-
, 0)
B. foci at (0, ) and (0, -
)
C. foci at (, 0) and (-
, 0)
D. foci at (2, 0) and (-2
, 0)
Mathematics