Answer:
Step-by-step explanation:

A.B = A × B

Dimension of the resultant matrix is (3 × 3)
Answer:
Bill received 13.68 change back.
Step-by-step explanation:
20-6.32=13.68
Answer: 129.33 g
Step-by-step explanation:



-3x+5y=-4
5y=3x-4
Y=3/5x-4/5
When it parallel to the line y=3/5x-4/5
It can be y=-3/5x+b
-5=6/5+b
B=-5-6/5=-25/5-6/5=-31/5
Y=-3/5x-31/5
3/5x+y=-31/5
Multiply 5
3x+5y=-31