15 I may be wrong but If I am please provide more information.
        
             
        
        
        
Zero.
Anything times zero is zero.
-20 * -10 = 200
200 * -1 = -200
-200 * 0 = 0
        
                    
             
        
        
        
Answer:
22
Step-by-step explanation:
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Answer:
   x = √2, y = 2
Step-by-step explanation:
You know that the sides of an isosceles right triangle are equal in length, so ...
   x = √2 . . . . same as the given side
You also know that the hypotenuse is √2 times as long as one side, so ...
   y = √2·√2
   y = 2
 
        
             
        
        
        
Answer/Step-by-step explanation:
The scale factor is missing in the question. However, here's how to find the length of the new radius if given a known scale factor.
Length of new radius = length of the radius of the dilated circle × scale factor of dilation 
Length of the radius of the dilated circle is given as 18m
Therefore, 
Length of new radius = 18m × scale factor.
If the scale factor is a fraction, it means the new length would be smaller than 18m. But if the scale factor is a whole number, the new length of the radius would be greater than 18m.
Let's assume any of the following scale factors was what was given in the question:
<em>*If scale factor given is ½, new radius length = 18m × ½ = 9m</em>
<em>*If scale factor given is 2, new radius length = 18m × 2 = 36m</em>