Solve the system of linear equations using the gauss-jordan elimination method. 2x1 − x2 + 3x3 = −10 x1 − 2x2 + x3 = −3 x1 − 5x2 + 2x3 = −7 (x1, x2, x3) =

The solution is:

Step-by-step explanation:

The Gauss-Jordan elimination method is done by transforming the system's augmented matrix into reduced row-echelon form by means of row operations.

We have the following system:

This system has the following augmented matrix:

To make the reductions easier, i am going to swap the first two lines. So

Now the matrix is:

Now we reduce the first row, doing the following operations

So, the matrix is:

Now we divide L2 by 3

So we have

Now we have:

So, now we have our row reduced matrix:

We start from the bottom line, where we have:

At second line:

At the first line

The solution is:

i believe

step-by-step explanation:

from my conclusion c

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies