Show how to use elimination matrices to solve the following system of equations. Please give your final solution as either a point, no solution, or a set of solutions: x - y - 2z = -1
-2x+2y+4z = 2
-2x+3y+z = 7

ok

step-by-step explanation:

go on the tube you might find some information there

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

step-by-step explanation:

mean or average is 40.6