Step-by-step explanation:
if i pick (3,4) and (6,10) 
the formula for gradient is difference in y divided by difference in x . therefore
10-4 divided by 6 - 3 equals to 6 divided by 3 = 2
the gradient is 2
 
        
             
        
        
        
Answer:
the square root of 169 is 13 then ×2
26
I hope I am correct mate
enjoy your day
#Captainpower
 
        
                    
             
        
        
        
Answer:
easy peasy,
the 'n' th term of any arithmetic sequence can be found with the following formula
=> a + ( n-1) d, [where 'a' if the first term of the sequence, 'n' the number of term we need to find, and 'd' being the common difference between each two consecutive term of the sequence)
all in this case would be, 
a = 0 
n = 100
d = +5
hence the 100th term would be,
=>  0 + (100 - 1) 5
=> 99 x 5 
=> 495
 
        
             
        
        
        
4
22
-12
those are the right answers