Answer:
So the height is 12
Step-by-step explanation:
Let W be the width
 
Let W- 4 be the height
 
W2 +(W-4)2 = 400
 
So: W2 -4W-192 =0
 
One uses the quadratic solution:
 
W = (4 + (16 + 4*192).5)/2 = 16
 
        
             
        
        
        
Answer:
10 
Step-by-step explanation:
x = 10, -15 
 
        
             
        
        
        
Since the slope is -4 and it is passing through (7,6) so the  point slope form of equation can be applied. y-6= -4(x-7)
        
             
        
        
        
Answer:
7
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Both
Claire
Andre
Neither
Step-by-step explanation:
We have to determine whether each point lies on Claire's line (blue) and whether it lies on Andre's line (black).
Point A is the intersection of both lines, hence the statement represents them both.
Point B only lies on Claire's line.
Point C is the start of Andre's line.
Point D is outside of both lines.