Answer:
Step-by-step explanation:
X>X
-4+X>-2+X
 
        
             
        
        
        
We need to solve for R, This is really simple.
The original expression is:
R (r1 + r2) = r1r2
To solve for a certain variable, we need to get this variable alone on one side of the equation and equate it with the other side.
In the given expression, to get R alone on one side we have to eliminate (r1 + r2).
In order to do this, we will divide both sides by (r1 + r2).
Doing this, we get the solution as follows:
R = (r1r2) / (r1 + r2)
        
                    
             
        
        
        
Answer:
i cant really see what it says
Step-by-step explanation:
 
        
             
        
        
        
to be a function, each input can have only one output.  For these points, each x has only one y, so it it a function.  A relation, just describes x to y, so it is both
 
        
             
        
        
        
Answer:
4 m. 
Step-by-step explanation:
Length of ladder, L = 4.50 m
Base of ladder from the wall, B = x
Height of the wall, H = 2x
Using Pythagoras theorem




Height of the wall  is equal to 2 x 2 = 4 m.