Determine whether the following matrices are in echelon form, reduced echelon form or not in echelon form. ⎡⎣⎢−91011001−21⎤⎦⎥ ⎡⎣⎢⎢⎢11050010080⎤⎦⎥⎥⎥ ⎡⎣⎢10001000162−8⎤⎦⎥ ⎡⎣⎢100010111⎤⎦⎥ note: in order to get credit for this problem all answers must be correct

You will subnet the network address 172.31.103.0/24. the network has the following requirements: · room-114 lan will require 27 host ip addresses · room-279 lan will require 25 host ip addresses · room-312 lan will require 14 host ip addresses · room-407 lan will require 8 host ip addresses how many subnets are needed in the network topology?