<h3>Answer: 22 units</h3>
=====================================================
Explanation:
You can use the distance formula

----------------
A shorter method is to subtract the y coordinates and apply absolute value
So either |-4-18| = |-22| = 22
Or, |18 - (-4)| = |18+4| = |22| = 22
This method only works because the x coordinates are the same. We can also use this method if the y coordinates were the same with the x coordinates being different.
X2=9 has only one solution, which is 4.5
Answer:
x = 3
Step-by-step explanation:
the line doesn't have a slope
Answer:
The answer is 6
Step-by-step explanation:
...........
Let y = the length of the 3rd side
x+3 + 2x+4 + y = 6x
x + 2x + 3 + 4 + y = 6x
3x + 7 +y = 6x
7 + y = 3x
y = 3x - 7
The length of the third side in terms of x is 3x-7