For the following questions refer to the matrices listed below.
E = \left[\begin{array}{ccc}1 & 4 & 0\\4 & 8 & 7\end{array}\right]F = \left[\begin{array}{ccc}1 & 0 & 0\\0 & 1 & 0\\0 & 0 & 1\end{array}\right]G = \left[\begin{array}{cc}1 & 0\\0 & 1\end{array}\right]M = \left[\begin{array}{cc}4 & 5\end{array}\right]N = \left[\begin{array}{cc}2 & 8\\3 & 9\end{array}\right]P = \left[\begin{array}{c}4\\5\end{array}\right]Q = \left[\begin{array}{cc}3 & 1\\7 & 0\end{array}\right]R = \left[\begin{array}{cc}4 & 5\end{array}\right]S = \left[\begin{array}{cc}6 & 2\\6 & 5\\3 & 7\end{array}\right]T = \left[\begin{array}{ccc}4 & 2 & 7\end{array}\right]U = \left[\begin{array}{cc}4 & 6\\5 & 9\end{array}\right]V = \left[\begin{array}{cc}3 & 0\\6 & 1\\2 & 5\end{array}\right]