Answer: t=20°
Step-by-step explanation:
 1. By definition, the sum of the interior angles is 180 degrees.
 2. Keeping the information above on mind, you can write the following expression:
 
 3. Now, you must solve for  as following:
 as following:
 
 4. Therefore, the value of  is 20°
 is 20°
 
        
             
        
        
        
I CAN HELP YOUUUUUUUUUUUUUUUUUU!!!!!!!!!!!!!!!!!!1
lets distribute 7(x+3)
so 7(x)+7(3)
7x+21  or b
yay :)
        
                    
             
        
        
        
There are 10 doses.  4x5=20/2=10
        
                    
             
        
        
        
I believe you are correct keep it up
        
             
        
        
        
You literally just need to click yes then call it a day it’s simple don’t worry too much :D