Cos=(adjacent/hypotenuse) 
So the answer will be cos(16/20) or cos(4/5) both will give u the same answer 
I hope it helps 
        
             
        
        
        
Answer: -49
Step-by-step explanation:  hope this helps you and plz mark me as brainest 
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
 
        
             
        
        
        
1000 + 50x = 500 + 75x
First move 500 by subtracting it from 1000.
500 + 50x = 75x
Now subtract 50x from 75x.
500 = 25x
Then divide 500 by 25.
20 = x
They would've saved the same amount($2,000) on the 20th week.