Answer:
B 
Step-by-step explanation: it is easy
 
        
             
        
        
        
< ABC is a straight angle
no right angles
no complimentary angles
< ABD and < DBC are supplementary angles
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
The correct answer is 5/6 = 83.3%
I really hope this helps!
 
        
             
        
        
        
Answer:
Hey there!
a/3=-18
a=-54
Let me know if this helps :)
 
        
             
        
        
        
Let us find the area of the triangle first.
6 x 8 / 2 = 24 ft²
Now we can do the semi circle. Note that it is a semi circle and not a circle.
1/2π(4²) = 8π = 25.12 ft²
Add the areas up to find the area for the figure.
24+25.12 = 49.12 ft²