Add or subtract.(4 - 9i) + (-4 + 9i)
A. -8 + 18i
B. 8 - 18i
C. -8 - 18i
D. 0
Answer: D
Mathematics
You might also like to view...
Find the total area of the region between the curve and the x-axis.y = 
; 1 ? x ? 3
A. 
B. 
C. 3
D. 
Mathematics
Determine if the graph of the function is concave up or concave down.y = - 
(x + 5)2 - 4
A. Concave up B. Concave down
Mathematics
Find the derivative of the function.
Mathematics
Compute the exact value of the function for the given x-value without using a calculator.f(x) = 
x for x = 3
A. 
B. 
C. 
D. 125
Mathematics