A. The value [tex]b_{12}[/tex] is -18
the 2 matrices are equal if it have the same dimension and order or the corresponding elements are identical. Matrices P and Q are =. Matrices A and B are not equal because it dimensions and order are different. We can use the equality of matrices to solve for variables.
The two matrices are equal. so, the quantity on the upper, right-hand corner of A (which is -18) is equal from the quantity in the upper, right-hand corner of B, which is b-sub-12.
So, A (-18) is the correct option.
What is the difference between matrices and determinants?
The matrix are group of numbers, or a determinant is a unique number related from that matrix. A determinant can be obtained from square matrices, but does not the other way around. A determinant can't give a unique matrix associated with this. The algebra concerning of the matrices or determinants has similarities and differences.
Learn more about matrices here https://brainly.com/question/11367104?
#SPJ2
