Answer:
a^2+b^2=c^2 look below
Step-by-step explanation:
Count the squares so
3^2+4^2=5^2
3*3=9
4*4=16
5*5=25
9+16=25 and it does check out
this should help if u need more explanation ill be more then happy to explain to you 
 
        
             
        
        
        
Answer:
(3)
Step-by-step explanation:
(1), (2) and (4)
can be written as Fr= p1-p2, F and r are inversely proportional
(3) r is directly proportional with F which is opposite to the given formula
hence this is incorrect
 
        
             
        
        
        
Answer:
0 ≤ x ≤ 5
Step-by-step explanation:
I used the Desmos calculator
 
        
             
        
        
        
If sqrt x = 9 then x = 9*9 = 81
Answer is  between 80 and 90.
        
                    
             
        
        
        
The new slope would now be 2 so y=2x-3