Matrix C has ions 2 X 7. Determine the dimensions of the matrix CD, if it is possible. Explain why if it is not. Matrix would have the dimensions 2 X 7

Question

Matrix C has the dimensions 7 X 2 and Matrix D has the dimensions 2 X 7. Determine the dimensions of the matrix CD, if it is possible. Explain why if it is not. 

 Matrix CD would have the dimensions 2 X 2

 Matrix CD would have the dimensions 2 X 7

 Matrix CD would have the dimensions 7 X 7

 These matrices cannot be multiplied because their dimensions don't align.

Answer 1

You can only multiply an m x p matrix by a p x n matrix, resulting in an m x n matrix. Now apply this to the matrices in the problem.