Answer:

Step-by-step explanation:

Add the fractions since the denominators are the same.


Simplifying the fraction.


 
        
             
        
        
        
Answer:
y-4= -1/2(x-4)
Step-by-step explanation:
First you have to find the slope to write it in point slope
to do this you find change in Y over change in X
From -4 to 4 is postivite 8 and from 8 to 4 its -4
Now you do -4 divided by 8 and get -0.5 or -1/2 for slope now pick one of the points and put it in the formula y-y1=m(x-x1)
 
        
                    
             
        
        
        
We can use the ratios for special triangles (see the attachment below). We'll be using the 45-45-90 triangle. We notice that side BC is equal to 

, and side AC (x using the special right triangle) is equal to 16. We can therefore say that side BC is equal to 

 ft
:)
 
        
        
        
Answer:
1/25
Step-by-step explanation:
1 m = 100 cm
4m x 100 = 400 cm
If it is 16 cm long, then the scale factor is 16/400, which simplifies to 1/25.
 
        
             
        
        
        
 Answer:
25%
Step-by-step explanation: