AnswersAdvanced Algebra Concepts and ConnectionsPretestQuestion 3
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Question 3 • Advanced Algebra: Concepts and Connections

What is the inverse of the matrix? the 2 by 2 matrix row 1, 5 7 row 2, 6 9

Answer
A
the 2 by 2 matrix, row 1, column 1, negative 5 thirds column 2, 7 thirds row 2, column 1, 2 column 2, negative 3
B
the 2 by 2 matrix, row 1, column 1, 5 thirds column 2, negative 7 thirds row 2, column 1, negative 2 column 2, 3
C
the 2 by 2 matrix, row 1, column 1, 3 column 2, negative 7 thirds row 2, column 1, negative 2 column 2, 5 thirds
D
the 2 by 2 matrix, row 1, column 1, negative 3 column 2, 7 thirds row 2, column 1, 2 column 2, negative 5 thirds
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