Find the inverse of the matrix. 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Evaluate the expression using the order of operations.
+ (-8)
A. 12 B. -28 C. 28 D. -12
Mathematics
Solve the problem.The number of edges in a tree with 57 vertices is
A. 56. B. 257. C. 58. D. 57. E. none of these
Mathematics
What does the circuit symbol in the figure mean?
?
?
A. Battery B. Switch C. AND-gate D. Light E. OR-gate
Mathematics
Simplify the expression.(7
- 2)(
+ 2)
A. 7
+ 14
- 4
B. 7
+ 12
- 4
C. 7
+ 12
+ 4
D. 
+ 12
- 4
Mathematics