Answer:
D.
Step-by-step explanation:
The formula is Sum(n) = (n -2) 180.
 
        
             
        
        
        
Answer:
 ,
,
Step-by-step explanation:
The function of the graph can be written in the vertex form as 
 , where V(h,k)=V(2,4) is the vertex of the quadratic function.
, where V(h,k)=V(2,4) is the vertex of the quadratic function.
We substitute the value to obtain;
 ,
,
The point (5,1) lies on the graph so we use it to determine the value of a.
 ,
,
 ,
,
 ,
,

The required equation is 
 ,
,
 
        
             
        
        
        
Answer:
Dear Laura Ramirez
Answer to your query is provided below
The ratio of triangle XYZ is 1:√3 :2.
Step-by-step explanation:
A 30-60-90 right triangle (literally pronounced "thirty sixty ninety") is a special type of right triangle where the three angles measure 30 degrees, 60 degrees, and 90 degrees. The triangle is significant because the sides exist in an easy-to-remember ratio: 1:√3 :2.
 
        
             
        
        
        
Answer:
Blank 1: (-7,0)
Blank 2: (-1,0)
Step-by-step explanation:
Plug x=0 into the equation and solve the resulting equation y=7 for y
Plug y=0 into the equation and solve the resulting equation 0=(x+1)(x+7) for x