Factor by grouping.xy + 12x - 7y - 84
A. (x + 12)(y - 7)
B. (x - 12)(y + 7)
C. (y - 12)(x + 7)
D. (y + 12)(x - 7)
Answer: D
Mathematics
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Evaluate the definite integral.
A. -21
B. - 
C. 11
D. - 
Mathematics
The following question refers to a country with five states. There are 250 seats in the legislature, and the populations of the states are given in the table below.
The standard quota for State C is
A. 18.5. B. 116.5. C. 2.13. D. 117.5. E. none of these
Mathematics
Divide, if possible. Write the answer in simplest form.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Find the mean of the random variable x associated with the probability density function over the indicated interval.
?
; 
?
A. ?
B. ?
C. ?
D. ?
E. 
Mathematics