The row-echelon form of the augmented matrix of a system is given. find the solution of the system.

[1 0 -1 3]
[0 1 5 -4]
[0 0 1 1]

Which system of linear inequalities is represented by the graph? x-3y > 6 and y? 2x + 4 x + 3y > 6 and y? 2x - 4 x - 3y > 6 and y? 2 - 4 x + 3y > 6 and y > 2x + 4 no be 2 -1.1 1 2 3 4 5 submit save and exit next mark this and retum be

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle