The answer for number 3 is 3.c
        
                    
             
        
        
        
X^2 = b^2-c^2
x^2= sqrt117^2-6^2
x^2=sqrt117×sqrt117-36
x^2=117-36
x^2=81
x=sqrt81
x=9cm
        
             
        
        
        
Answer:
The number is 16
Step-by-step explanation:
3/4 n- (-16) = 28
3/4 n + 16 = 28
Subtract 16 from each side
3/4 n +16-16 = 28-16
3/4 n =12
Multiply by 4/3 to isolate n
4/3 * 3/4 n = 12 * 4/3
n = 16
 
        
             
        
        
        
It’s -108. Hope this helps you out. Let me know if you need something else
        
             
        
        
        
I hope this helps have a good day