Answer:
f = -15
Step-by-step explanation:
 
        
             
        
        
        
<h3>
Answer:  4</h3>
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Work Shown:

Note in step 2, I factored each number in the square root to pull out the largest perfect square factor. From there, I used the rule that  to break up the roots.
 to break up the roots.
 
        
        
        
Answer:
StartRoot 80 EndRoot 
Step-by-step explanation:
|GH|² = (8 - 0)² + (1 - (-3))²
|GH|² = 64 + 16
|GH|² = 80
GH = sqrt(80)
 
        
                    
             
        
        
        
Answer:
Parallelogram
Step-by-step explanation:
Hope this helps! Please leave any questions or concerns in the comments, byeee <3