Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Answer: B
Mathematics
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Find the indicated term.4, -12, 36, -108 , . . . ; 5th term
A. 81 B. -108 C. 2916 D. 324
Mathematics
Solve the system of equations by the addition method.
A. (16, 13)
B. 
C. (13, 16)
D. no solution
Mathematics
Solve.4x2 - 28 = 0
A. -
, 
B. ±7
C. 8
D. 14
Mathematics
Find the difference.52.12 - 48
A. 100.12 B. 4.62 C. 4.22 D. 4.12
Mathematics