4. 1/3   6.-0.9 or -9/10    8. 2 1/3  10. -3.45   12.4.54 or 4 27/50
        
             
        
        
        
by pythagorean formula, the last side is √(61)
by cos rule
cos A

A = 39.81
 
        
             
        
        
        
x/5 = 6/15
15x = 30
    x = 2
answer
x = 2 ft
y/10 = 6/15
15y = 60
y = 4
answer
y = 4 ft
        
                    
             
        
        
        
Answer:
5
Step-by-step explanation:
Just multiply 5/7 by 7 since his dog retrieved 5/7 out of the 7 ducks he shot.