Question

Select the correct answer. which is the inverse of this matrix? a. b. c. d. e. the matrix is noninvertible.

Answer 1

A. [-19    9    -7

       15    -7    6

       -2     1    -1 ] is the correct answer.

The question is incomplete but assuming inverse is asked for the matrix

X= [ 1     2      5

      3     5      9

       1      1      -2]  

Step 1: to calculate the determinant, |X|=1

Step 2: to find the adj X=  [-19    9     -7

                                             15    -7     6

                                              -2     1      -1]

Step 3: find the inverse, which is given by Adj X/ |X|, hence, the answer A.

learn more about how to find inverse of a matrix here brainly.com/question/12442362

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