Final answer:
Multiplying a 10x9 matrix with a 9x14 matrix results in a 10x14 matrix. The resulting matrix's size correlates to the number of rows in the first matrix and the number of columns in the second matrix.
Step-by-step explanation:
When you multiply a 10x9 matrix and a 9x14 matrix, the size of the resulting matrix will be determined by the number of rows of the first matrix and the number of columns of the second matrix. Since the first matrix has 10 rows and the second matrix has 14 columns, the resulting matrix from their multiplication will be a 10x14 matrix.
To multiply two matrices, the number of columns in the first matrix must be equal to the number of rows in the second matrix, which is the case with a 10x9 and a 9x14 matrix. The elements of the resulting matrix are found by multiplying rows of the first matrix with the columns of the second matrix and then adding the products.