Mental math is something that can be done i your head. 
for example you can do 1+1 in your head and you dont need a calculator or paper to do it so i would be called mental math
Hope this helps
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<span>Let's say in general you want "n" adjacent squares. Each one needs a top, so that's n toothpicks. Each one needs a bottom, so that's another n toothpicks, and we're up to 2n total. You need one on the far left, and one on the far right, which brings us up to 2n + 2 toothpicks. Now we need to worry about the middle ones. But notice that you don't need n toothpicks for the interior because adjacent squares share. It turns out that you only need n-1. That brings us up to a grand total of 3n + 1 toothpicks, which would be 301 for n = 100.
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NO it is not possible when dividing an irregular shape to polygons to overlap. Every polygon would be broken up in piece.
        
             
        
        
        
Answer:
b = 4
Step-by-step explanation:
5-1=5b-4b
4=b
 
        
                    
             
        
        
            
            
                Use the equation and type the ordered-pairs. y = log 3 x {(1/3, a0), (1, a1), (3, a2), (9, a3), (27, a4), (81, a5) 
                vagabundo [1.1K]             
         
        
Answer:
Considering the given equation 
And the ordered pairs in the format 
I don't know if it is log of base 3 or 10, but I will assume it is 3.
For 
 
 


So the ordered pair will be 
For 
 
 


So the ordered pair will be 
For 
 
 


So the ordered pair will be 
For 
 
 


So the ordered pair will be 
For 
 
 


So the ordered pair will be 
For 
 
 


So the ordered pair will be 