Multiply.(2 + 4i)(6 + 7i)
A. 28i2 + 38i + 12
B. -16 - 38i
C. -16 + 38i
D. 40 + 10i
Answer: C
Mathematics
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Name the conic or limiting form represented by the given equation.3x2 + 42x + 7y2 - 28y + 147 = -28
A. Hyperbola B. Point C. Ellipse D. Empty set
Mathematics
The centroid of a triangle lies at the intersection of the triangle's medians, because it lies one-third of the way from each side towards the opposite vertex. Use this result to find the centroid of the triangle whose vertices appear as following.(0, 0), (2, 0), (1, 8)
A. (0, 
)
B. (1, 
)
C. (
, 4)
D. (1, 
)
Mathematics
Solve the equation.4(7 - 3x) = 
A. {4}
B. {-3}
C. {3}
D. 
Mathematics
Use one of De Morgan's laws to write the negation of the statement.2 < 9 or 7 ? 6
A. 2 < 9 or 7 = 6 B. 2 ? 9 or 7 ? 6 C. 2 ? 9 and 7 = 6 D. 2 ? 9 or 7 = 6
Mathematics