Answer:
Y= -8 
X= 3
Step-by-step explanation:
apply -(-a)=a rule
-23+4*8/3
-23+4*8=9
9/3
=3
2y-(3)=-19
y= -8
 
        
                    
             
        
        
        
The distance between two points (x₁,y1),(x₂,y₂) is d

For the given problem we have 
<span>W(1,8),X(7,8),Y(4,5), and Z(1,2)
The length of WY = </span>

 = 3√2
The length of WX = 

 = 6
The length of WZ = 

 = 6
The length of XY = <span><span>

 = 3√2
</span>The length of ZY = </span><span>

 = 3√2
∴ WX = WZ  ⇒⇒⇒ proved 
    XY = ZY   ⇒⇒⇒ proved
    WY = WY  ⇒⇒⇒ reflexive property
∴ Δ</span><span>WYZ is congruent to ΔWYX by SSS method</span>
 
        
        
        
Answer:
D.252
Step-by-step explanation:
In this question, We have to find which rotation about its center will carry a regular decagon onto itself?
A decagon : 10 sided polygon
As we know, a full rotation can be 360°.
For a decagon: 360/10 =36
For a decagon, any multiple of 36 can map onto itself.
In our options only 252 is the multiple of 36.
So, correct answer is option D 252
 
        
             
        
        
        
Can you please provide us with english translation..
thanx