This would be ( using the Pythagoras theorem) = sqrt (3^2 + 4^2)  = sqrt 25
= 5 units  (answer).
        
             
        
        
        
Answer:
10.8$
Step-by-step explanation:
(8*4.03)/3 = 10.8
 
        
             
        
        
        
Answer:
Mirandah added 5x and 9y, which she shouldn't do because one is y and the other is x, meaning they don't match. 
There is no simplifying the equation. It should stay 5x + 9y - 4
If wrong, I apologize, but this should be correct.
 
        
             
        
        
        
Answer:
Well the answer is the first one 3 (5 x) and 15x
Step-by-step explanation:
Because it is the same thing as (5 x) 3. The numbers just changed the positions.
And 15x because you can multiply the first 5 times 3 and that is equal with 15 and then you put the x at the end. 15x
 
        
             
        
        
        
Answer: 24m+28
Step-by-step explanation:
you would distribute the -4 threw eveything
so it would be 24m+28