Multiply.(9 - 5i)(3 + 8i)
A. 67 - 57i
B. 67 + 57i
C. -40i2 + 57i + 27
D. -13 - 87i
Answer: B
Mathematics
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Evaluate the integral by first performing long division on the integrand and then writing the proper fraction as a sum of partial fractions.
A. 3x2 + 3 ln 
- 3 ln 
+ C
B. 3 ln 
- 3 ln 
+ C
C. 
x2 + 3 ln 
- 3 ln 
+ C
D. 
x2 - 3 ln 
+ 3 ln 
+ C
Mathematics
Find the exact value of the indicated trigonometric function of ?.tan ? = - 
, 90°< ? < 180°Find cos ?.
A. 
B. -8
C. - 
D. 
Mathematics
Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9 B. 12 C. 10 D. 2
Mathematics
Factor by grouping.8y2 + 18y + 9
A. (8y + 3)(y + 3) B. 8y2 + 18y + 9 C. (4y + 3)(2y + 3) D. (4y - 3)(2y - 3)
Mathematics