Perform the indicated operation. Write the result in standard form.(
- 2i)(
+ 2i)
A. 8 + 4i
B. 10
C. 12
D. 8 - 4i
Answer: C
Mathematics
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Find v ? u.v = -8i + 7j and u = 2i + 2j
A. -16i + 14j B. -2 C. -30 D. -6i + 9j
Mathematics
Find the Cartesian product.A = {0}B = {19, 29, 39}Find B × A.
A. {0} B. {(19, 0), (29, 0), (39, 0)} C. {0, 0, 0} D. {(0, 19), (0, 29), (0, 39)}
Mathematics
Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Use elimination to solve the system of equations.5x + 5y = 253x + 3y = 15
A. Inconsistent; no solutions B. (0, 5) C. (0, 6) D. (-1, 6)
Mathematics