Answer:
N ( a number)  40
 40
Step-by-step explanation:
Or just say 
N  40
 40
 
        
                    
             
        
        
        
Answer:
sister = 6 years 
John=18 years 
Step-by-step explanation:
A(S) + 12 = 3 * A(S), subtracting A(S) from both sides one gets 12 = 2 * A(S). Now dividing both sides by 2 we get A(S) = 12/2 = 6 . Therefore, the age of the sister is 6 years when her brother John is three times as old, that is 18 years.
 
        
                    
             
        
        
        
Answer:
3/4
Step-by-step explanation:
3x - 4y = 7.....subtract 3x from both sides
-4y = -3x + 7 ...now we divide both sides by -4
(-4/-4)y = (-3/-4)x + (-7/4)...simplify
y = 3/4x - 7/4
y = mx + b
y = 3/4x - 7/4.....so the number in the m position is 3/4 <== ur slope
 
        
                    
             
        
        
        
I was stuck on the same thing in my class test. I ended up failing but if I get the answers to it I’ll totally send them to you!!!