Answer:
9
Step-by-step explanation:
9x8=72
9x9=81
You would order it as the following: 415.138, 452.018, 457.2, 828.142
The element on the position (1,1) in the product matrix FC is a scalar product of the first row in F and the first column in C.
Therefore the element in the position (1,1) in FC will be a scalar product of (-2,0) and (12,1):

The only matrix that has a value of -24 in the position (1,1) is matrix B.
Therefore, the answer is matrix B.
Answer: 2/3 is bigger step-by-step explanation:
2/3 is 0.667 and 3/5 is 0.6