Answer:
16
Step-by-step explanation:
<h2>
<em><u>Plz thank me and mark me as a brainlists</u></em></h2>
 
        
                    
             
        
        
        
Answer:
60
Step-by-step explanation:
 
        
             
        
        
        
Answer:

Step-by-step explanation:
We are given two points, the y - intercept and the x - intercept.
The y - intercept being: ( 0, -7 )
The x - intercept being: ( 1, 0 )
The equation of a line in slope - intercept form is:
y = mx + b, where m is the slope and b is the y - intercept.
We already have the y - intercept. So far we have:
y = mx - 7
What we're missing is the slope.
To find the slope, we can use this formula:
 , where
, where  and
 and  are the x - coordinates of both points and
 are the x - coordinates of both points and  and
 and  are the y - coordinates of both points.
 are the y - coordinates of both points.

We now have the missing piece, the slope, so the equation now is:

 
        
             
        
        
        
Answer:




The absolute difference is:

If we find the % of change respect the before case we have this:

So then is a big change. 
Step-by-step explanation:
The subindex B is for the before case and the subindex A is for the after case
Before case (with 500)
For this case we have the following dataset:
500 200 250 275 300
We can calculate the mean with the following formula:

And the sample deviation with the following formula:

After case (With -500 instead of 500)
For this case we have the following dataset:
-500 200 250 275 300
We can calculate the mean with the following formula:

And the sample deviation with the following formula:

And as we can see we have a significant change between the two values for the two cases. 
The absolute difference is:

If we find the % of change respect the before case we have this:

So then is a big change. 
 
        
             
        
        
        
Answer: 12 inches 
Step-by-step explanation:
This is a square shaped mirror which means that it takes the shape of a square. 
All sides on a square are equal and because the way the find the area of a square is to multiple the Length by the Width, you would be squaring the same number to find the area. 
Length of each side = √area
= √144
= 12 inches