Answer:
Step-by-step explanation:
Solve for :
-Subtract on both sides:
So, therefore, the final answer is .
Mary spent $90 on 5 pairs of shoes 1 pair of shoes cost $10 the other for pairs cost the same amount how much did the other pair
1 answer:
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Answer:
Step-by-step explanation:
- The product of two matrices
and
equals a matrix
, where the first element of the subscript represents the amount of files of the matrix and the second element represents the amount of columns of the matrix.
- Then, in this case
, therefore, its product will result a matrix
.
- Because C matrix is going to have an only file and three columns, we now have to find the values of the elements in each column, based on the elements of A and B.
- Commonly, to obtain the values of the resulting matrix, we just have to multiply each file of the first matrix by each column of the second matrix and sum, as follows:
- Finally, C matrix is