Answer:
5) EG=HG because it's corresponding part of congruent triangles are congruent (CPCTC)
 
        
             
        
        
        
Answer:
   D. The input force is equal to the output force
Step-by-step explanation:
A pulley changes the direction of the applied force, but does not change its magnitude. The mechanical advantage is the ratio of output force to input force, so must be 1 when the force magnitude does not change.
 
        
             
        
        
        
X = 21 
Hope this helped :)
        
             
        
        
        
Answer:
Area of triangle: 1/2*base*height
Here height= 4
Base= 8
Thus area= 1/2*4*8
=4*4
=16