Every triangle measures 180 degrees.
In order to get the answer you need to add every equation and set it equal to 180.
2x+4+2x-9+x=180
Combine like terms.
5x-5=180
Add 5 to the other side.
5x=185
Divide by 5.
x = 37
Now, plug 37 in for every x.
Angle A: 2(37)-9
Angle B: 2(37)+4
Angle C: 37
The measures are:
Angle A = 65
Angle B = 78
Angle C = 37
Hope this helps!
        
             
        
        
        
Answer: 2.339
Step-by-step explanation:
Make sure that you align your decimal points. The 1 shouldn't line up with the 7.
Instead, write your equation like:
 2.37
- 0.031
The numbers don't match up, but instead, the decimals do. 
I hope this helps! :)
 
        
                    
             
        
        
        
2+x+4 just drop the parenthasesi think
        
             
        
        
        
Answer:
Least 8.06, 8.295, 8.3, 8.31 Greatest
 
        
                    
             
        
        
        
Answer:
I don't know were the statement are but here are the specs of each set
Step-by-step explanation:
Set A 
mean; 83.83333
median; 87.5
mode; it has no mode
range; 147
Set B
mean; 67.08571
median; 3
mode; no mode
range; 376
hope this helps sorry for late answer :)