Answer:
   ∠A = 26°
Step-by-step explanation:
Supplementary angles total 180°.
   ∠A +∠B = 180°
   (x -16)° +(3x +28)° = 180°
   4x° + 12° = 180°
   x° +3° = 45°
   x° = 42°
   ∠A = (x -16)° = 42° -16°
   ∠A = 26°
 
        
             
        
        
        
 This will help u and hope its right .
 
        
             
        
        
        
Okay so we need to figure out the width of the swimming pool using the length, and we know the width is 10 ft shorter than twice the width. I believe the easiest way to do this would be to first do 35-10, and then divide it in half. That gives us 12.5. To check our work I'll do the problem 12.5+12.5+10=35.
The width of the swimming pool is 12.5 ft.