Multiple Choice
Find the cofactor C 12 of the matrix.
A) C 12 = 2
B) C 12 = 3
C) C 12 = -2
D) C 12 = -3
E) none of these
Correct Answer:

Verified
Correct Answer:
Verified
Q139: If possible, find 3A - 2B. <img
Q140: Find the determinant of the matrix <img
Q141: Solve the system, if possible. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8632/.jpg"
Q142: Solve the system by the method of
Q143: Find the inverse of the matrix. <img
Q145: Solve using any method. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8632/.jpg" alt="Solve
Q146: Solve the system. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8632/.jpg" alt="Solve the
Q147: Solve the system by Gauss - Jordan
Q148: Find 4A. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8632/.jpg" alt="Find 4A.
Q149: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8632/.jpg" alt=" Find the cofactor