we are given
system of equations
First equation is

Second equation is

now, we can find augmented matrix

now, we can change it into reduced row echelon form
step-1: multiply the 1st row by 1/3

step-2:add -3 times the 1st row to the 2nd row

step-3:multiply the 2nd row by 1/4

step-4: add 2/3 times the 2nd row to the 1st row

so, we get

Answer is (5,-8)
Answer:
2
Step-by-step explanation:
The answer I choose in particular is 2
Answer:

Step-by-step explanation:
Given


Required
The length of the diagonals
First, calculate the length of AB using:

So, we have:




The diagonal of a square is calculated using:

Where x is the length of each side.
So:


-- approximated
Answer:
Step-by-step explanation:
-5 means the x coordinate
and 6 means the y coordinate