Answer:
x = 2 Or 
x = -2
Step-by-step explanation:
Check attachment 
 
        
             
        
        
        
Answer:
Triangle B is right
Step-by-step explanation:
Using the converse theorem of Pythagoras.
If the square of the longest side in a triangle equals the sum of the squares of the other 2 sides then the triangle is right.
Triangle A
longest side squared = 36² = 1296
26² + 18² = 676 + 324 = 1000 ≠ 1296
Hence triangle A is not right
Triangle B
longest side squared = 25² = 625
20² + 15² = 400 + 225 = 625 ← correct
Hence triangle B is right
 
        
             
        
        
        
17/10-(2/5x2/2)
17/10-4/10
=13/10
        
             
        
        
        
Answer:
8/9 n-3
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
y=1/2x+5
Step-by-step explanation:
y=mx+b
m is slope so the slope is 1/2.