Just plug in the numbers for the variables.
20+3(8)+17(2)=
        
             
        
        
        
4/10 and 6/10 
(40% and 60%)
        
             
        
        
        
Answer:
Angle M = 120 degrees
Shortest side = MN
Middle Side = MO
Longest side = ON
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Approximately 12.04 units. 
Step-by-step explanation:
The find the distance between any two points, we can use the distance formula, which is: 

We have the points (2,7) and (-6,-2). Let's let (2,7) be (x₁, y₁) and let's let (-6, -2) be (x₂, y₂). Substitute: 

Subtract: 

Square: 

Add: 

Approximate

So, the distance between (2,7) and (-6,-2) is approximately 12.04 units. 
And we're done!