Answer:
(x-4)2=-13
Step-by-step explanation:
2x+13=8
2x-8=-13
2(x-4)=-13
 
        
             
        
        
        
Answer:
 The amount of white fabric to coloured fabric as a ratio is 20:11
Step-by-step explanation:
We are given that For each 11 mm of colored fabric Nick uses to make his curtains, he also uses 2 cm of white fabric. 
Length of colored fabric = 11 mm 
Length of White fabric = 2 cm 
1 cm = 10 mm 
2 cm = 20 mm 
So, length of white fabric = 20 mm 
So, Ratio of the amount of white fabric to coloured fabric = 
Hence the amount of white fabric to coloured fabric as a ratio is 20:11
 
        
             
        
        
        
Answer:
All real numbers 
Step-by-step explanation:
The domain represents the x-coordinates, so you can see on the graph that it goes all the way out to both the left and right directions, meaning it covers all the negative numbers, and all the positive numbers. The question is trying to trick you into thinking about the range, but forget about the y-axis for this one. 
 
        
                    
             
        
        
        
2x^2+3. the 2x cancel out and the rest is combining like terms