The rref of the identity matrix is the identity matrix because the identity matrix itself is already in Row Reduced Echelon Form.
Thus, no elementary row operations are required to change the identity matrix into Row Reduced Echelon Form.
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Although the statements are not given, allow me to provide supplements to your understanding of polynomial equations. Because the graphs of two polynomial equations (let's name then f(x) and g(x)), then they do not share coordinate planes or points. If they do not share any points by intersection, then the system of equations does not have a solution. Therefore, Kelly's statement is correct.
600=50 + 8t
600-50=8t
550=8t
t=68.75
idkk if i did tht right but i thinkkk!?
N is the number of leaflets so you just substitute the required number for N.
The cost of printing 2500 leaflets is <span>£</span>7925.