Using x3 as the free variable, find the general solution.
{x1 + x2 + x3 = 1
{ x2 + x3 = 0

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking

Which of these figures must be a rectangle?

The tax rate on harriet walker's 80,000 vacation home is 20 mills. the property is assessed at full value. how much will harriet walker's pay in taxes this year