Step-by-step explanation:
here's the solution :-
1.) =》f = 90°
( because angle made by diameter on circumference of the circle measures 90° )
2.) =》here, 
 g + f + 56° = 180°
( because the sum of all interior angles of the triangle measures 180° )
=》g + 90° + 56° = 180°
=》g + 146° = 180°
=》g = 180° - 146° 
=》g = 34°
3.) h = 56°
( since, they form alternate interior pair which are equal )
 
        
                    
             
        
        
        
The answer is c not D you are welcome
        
             
        
        
        
Subtract 3y and move it to the right 
X= 1 - 3Y
        
                    
             
        
        
        
T= 60°
It is an equilateral triangle which means all sides and angles are equal 
u= 10m 
It is an equilateral triangle which means all sides and angles are the same 
        
             
        
        
        
Distribute -2(x - 3)
4x - 2x + 6 = 10 + -9
Simplify
2x = -5
x = -2.5