Answer:
∠A = 107
∠B = 73
Step-by-step explanation:
∠A ,  ∠B are supplementary. So, ∠A + ∠B = 180
5x + 27 + 5x - 7 = 180
5x + 5x  + 27 - 7 = 180        {Combine like terms}
              10x + 20=180
                     10x = 180 -20
                    10x = 160
                       x = 160/10
x = 16
∠A = 5x + 27 = 5*16 + 27 = 80 + 27 = 107
∠B = 5x - 7 = 5*16 - 7 = 80 - 7 = 73
 
        
             
        
        
        
Answer:
ABC=BCD wtdf
Step-by-step explanation:
 
        
             
        
        
        
Answer:
I think that is A.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
None
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
D. 29.75
Step-by-step explanation:
To determine the mean, you must add up all the numbers and then divide that number by how many numbers you added.
Here,
21 + 23 + 35 + 40
= 119
You added 4 numbers (21, 23, 35, 40),
so, 119 / 4
= 29.75
Hope this helps and a thank won't hurt! :)