Answer:
5
Step-by-step explanation:
Remember, the rank of a matrix is the number of pivots or number of rows different of zero in the echelon form of the matrix.
Then, if A is a matrix 
the maximum number of pivots that can have is one by row, that is, 5.
Then the maximum rank that A can have is 5.
Answer:
40.265
Step-by-step explanation:
Divide 5 by 3 and continue dividing or mulitplying the numbers given
numbers on the top row: Mulityply
numbers on the bottom row: Divide
Answer:
60
Step-by-step explanation:
2 times 150
80, divide 200 by 2.5 and you get 80. Check by multiplying 2.5 and 80, which equals 200
