Perform the indicated operation. Write the result in the form a + bi.(4 + 5i) - (-9 + i)
A. -13 - 4i
B. -5 + 6i
C. 13 - 4i
D. 13 + 4i
Answer: D
Mathematics
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Translate to an equation and solve.72.6 is what percent of 33?
A. 45.45% B. 2.2% C. 4.55% D. 220%
Mathematics
Evaluate the double integral
?
?
for the function 
and the region R.
?
and R is bounded by 
, 
, 
and 
.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Evaluate the sum.
A. 35 B. 19 C. 37 D. 70
Mathematics
Combine like terms.- 
x - 
y2 + 
x + 
y2
A. 
x2 - 
y4
B. 
x - 
y2 + 
y
C. 
x - 
y2
D. - 
x - 
y2
Mathematics