-12.2z - 13.4z = -179.2

7

Step-by-step explanation:

This is an equation, where we find the value of z. We can simplify the equation.

-12.2z - 13.4z = -179.2

-25.6z = -179.2

Now, to find the value of z, we have to isolate the variable by dividing both sides by -25.6

-25.6/-25.6z = -179.2/-25.6

1z = 7

z = 7

step-by-step explanation:

once you graph it hit 2nd (the blue button) and graph

that takes you to a table of coordinates

on the left is x coordinates and on the right is y coordinates and an empty box

(you may have to scroll up/down in order to get ( x, 0)

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap