Step-by-step explanation:
The sum of the three angles in a triangle must be  . Since this triangle has a right angle, we know that it is
. Since this triangle has a right angle, we know that it is  °, so the sum of the remaining two angles must be
°, so the sum of the remaining two angles must be  .
.
We can set up an equation for the two remaining angles to determine the value of  :
:




 
        
                    
             
        
        
        
You have to use the distributive property, therefore you get 2x+13/3. 
The next step is to do 2 x 5 because they gave us a number for the variable x. Then you have to do 2 x 13 which gives us 26. 
10+26=36 and 36/3=12, hope I helped, Have a nice day! :)
        
                    
             
        
        
        
Thank you for posting your question here at brainly. Among the choices provided above if to name a geometric postulate or theorem used to find the solution if the distance of the ride from Tyler to Auburn if the entire trip is 450 miles is the 250 miles; segment addition postulate. 
The answer is B. I hope it helps. 
        
                    
             
        
        
        
This is what I got for the inequality