Find the sum or difference. Write the answer in standard form, a + bi.(9 + 6i) - (-3 + i)
A. 12 + 5i
B. 6 + 7i
C. -12 - 5i
D. 12 - 5i
Answer: A
Mathematics
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Find the vector projv u.v = 2i - 2j - 4k, u = 5i - 12k
A. 
i - 
j - 
k
B. 
i - 
j - 
k
C. 
i - 
k
D. 
i - 
k
Mathematics
Find the flux of the vector field F across the surface S in the indicated direction.F(x, y, z) = -10i + 9j + 3k , S is the rectangular surface z = 0, 0 ? x ? 7, and 0 ? y ? 5, direction k
A. 105 B. 0 C. 315 D. -350
Mathematics
Use the power property to rewrite the expression.logx 
A. logx 
B. 4 + logx y
C. 
logx y
D. 4logx y
Mathematics
Find the area of the trapezoid.A park in Canada is laid out in the shape of a trapezoid. The trapezoid has a height of 263 m. The bases are 425 m and 439 m. Find the area of the park.
A. 24,534,612.5 m2 B. 563.5 m2 C. 113,616 m2 D. 227,232 m2
Mathematics