Perform the indicated operations and simplify.
- 
+ 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.
A. 15
B. 5
C. 5
D. 16
Mathematics
Use Cramer's rule to solve the linear system.
A. {(9, 7, 2)} B. {(10, 5, 2)} C. {(9, -7, -2)} D. {(7, 2, 7)}
Mathematics
Prove that for all sets A and B1,B2, . . .Bn,
Mathematics
Find the domain of the rational function.r(x) = 
A. All real numbers except -4 and 2. B. All real numbers except -6 and 6. C. All real numbers except -2 and 4. D. All real numbers.
Mathematics