Given Info: "The dashed triangle is the image of the solid triangle"
So the "before" is the large solid triangle and the "after" is the smaller dashed triangle.
The horizontal side of the solid triangle is 15 units. The corresponding side for the dashed triangle is 3 units. Dividing the two values gives: 3/15 = 1/5 = 0.2
Make this value negative. The reason why is due to the fact that we have a sort of reflection going on as we're scaling down the figure. 
So the final answer is  -0.2
        
             
        
        
        
Answer:
A. 0.2, 0.25, 0.2
B. the scores are a quarter of the whole
 
        
                    
             
        
        
        
Answer:
x=1.3288 or -1.1288
Step-by-step explanation:
Given 
     Subtract 4x from both sides
          
Since we can factor out 2 from whole equation, let's factor out 2.
          
Divide with 2 on both sides
          
We got the quadratic equation, we can solve for x using quadratic formula.





 
        
                    
             
        
        
        
Answer: Not possible 
Step-by-step explanation: A whole number is an integer or a number without fractions. Both 15% and 40% are less than 1 since they are less than 100%; therefore, it is impossible to express them as whole numbers. They can only be expressed as the mixed numbers of 0.15 and 0.4, or 15/100 and 40/100.