Perform the indicated operation. Assume that all variables represent nonnegative real numbers.8
+ 2x
A. 68
B. 68x
C. 12x
D. (8
+ 12
)x
Answer: B
Mathematics
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Evaluate the improper integral or state that it is divergent. 
A. ln 2
B. - 
ln 2
C. ln 5
D. 
ln 6
Mathematics
Clear fractions and solve.
+ 
- 
= 0
A. 34 B. 1 C. 2 D. 0
Mathematics
Solve the problem.Sue has taken four exams so far in her History course. His scores are 88.7, 78.2, 93, and 87.5. What is the average of these scores?
A. 87 B. 86.85 C. 85.45 D. 89.05
Mathematics
Solve the system by the substitution method.
+ y2 = 9
A. (0, -3), (
, 2)
B. (- 
, 2), (0, -3), (
, 2)
C. (0, 3), (- 
, 2)
D. (0, 3), (
, 2)
Mathematics