Answer:
Step-by-step explanation:
Apply the Pythagorean Theorrem.  Find the sum of the squares of the two shortest sides and determine whether this sum equals the square of the longest side:
#19:  5^2 + 12^2 = ? = 13^2
  25  +  144  = ? = 169    This is true, so you do have a right triange in #19.
#21:  2^2 + 4^2 = ? = 7^2, or 4 + 16 = ? = 49     This is false.  Not a right
                                                                             triangle.
Apply this same approach (Pythagorean Theorem) to the remaining problems.
 
        
             
        
        
        
Answer:
A vertical shrink and reflects over the x axis
 
        
                    
             
        
        
        
Answer: Trinomials often (but not always!) have the form x2 + bx + c. ... So, how do you get from 6x2 + 2x – 20 to (2x + 4)(3x −5)? Let's take a look. Factoring Trinomials
Step-by-step explanation:
 
        
             
        
        
            
            
                A game board with 17 spaces. Start, green, green, star, quesiton mark, question mark, star, question mark, green, cat town, gree 
                erastova [34]             
         
        
Answer:
Possibly the answer is 2 green spaces, 2 star spaces, 3 question mark spaces
Step-by-step explanation:
 
        
                    
             
        
        
        
Search I think google have the have answer most of time