Rule: with any inscribed quadrilateral, the opposite angles are supplementary (they add to 180 degrees)
Based on that rule, we can say
d+100 = 180
d+100-100 = 180-100
d = 80
Answer: 80
        
             
        
        
        
12% Of 79 Would be 9.48. Hope this helped :)
        
                    
             
        
        
        
If one third of t is 7 than t is equal to 21
        
                    
             
        
        
        
Answer:
The volume of a cone is:
V=(hπr^2)/3, where h=height and r=radius  
V=(7π4^2)/3
V=112π/3 ft^3
V≈117.29 ft^3  (to nearest hundredth of a cubic foot)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
   x +4
Step-by-step explanation:
The trinomial x² +8x +16 is a perfect square trinomial, so factors as ...
   x² +8x +16 = (x +4)²
Assuming the side length is one of the factors of the given area, it will be ...
   side length = (x +4)