



In matrix multiplication, the number of columns in the 1st matrix is equal to the number of rows in the 2nd matrix.

Multiply each element of the 1st row of the 1st matrix by the corresponding element of the 1st column of the 2nd matrix. Then add these products to obtain the element in the 1st row, 1st column of the product matrix.

The remaining elements of the product matrix are found in the same way.

Simplify each element by multiplying the individual terms.

Now, sum each element of the matrix.

Sure what do you need help with ???
Answer:
Daniel is charged $900
Step-by-step explanation:
This is because 9 percent of 5000 is 450. Multiply 450x2 and get 900.
Well 3 packs for 6 dollars is 2 dollars a pack. while 2 packs for 5 dollars is 2.5 dollars a pack
Step-by-step explanation:
the answer is 42 because 2 times the 21 equals 42