Find A-1 if it exists.A = 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Factor completely.r2 + 3r - 4
A. (r + 4)(r - 1) B. (r - 4)(r + 3) C. (r - 4)(r + 1) D. Prime
Mathematics
Perform the indicated operation. Simplify if possible.
- 
A. 
B. 
C. 
D. 
Mathematics
Find the distance d(P1, P2) between the points P1 and P2.P1 = (1, -3); P2 = (-7, 3)
A. 20 B. 10 C. 100 D. 11
Mathematics
Solve.
= 3 + 
A. No solution B. -1 C. 5, 8 D. -5, -8
Mathematics