Answer:
I'm pretty sure it's 19,497 as the 1st nearest, and 19,515 as the 2nd
Because 19,506-9 is 19,497 and 19,506+9 is 19,515
 
        
             
        
        
        
Answer:
Midpoint
Step-by-step explanation:
The midpoint is the point on the segment halfway between the endpoints. It may be the case that the midpoint of a segment can be found simply by counting. If the segment is horizontal or vertical, you can find the midpoint by dividing the length of the segment by 2 and counting that value from either of the endpoints.
 
        
             
        
        
        
Answer:
   as written: 7x^2
   perhaps intended: 7x^4
Step-by-step explanation:
As written, the Order of Operations specifies that the only denominator factor is 3, so the expression is interpreted as ...
   
___
Sometimes grouping of denominator factors is intended, but parentheses are not written as they should be. If the intention is ...
   21x^3/(3x^-1)
then the simplification is ...
   
_____
The applicable rules of exponents are ...
   (a^b)(a^c) = a^(b+c)
   a^b/a^c = a^(b-c)
 
        
             
        
        
        
Well, there isn’t really an end for numbers... 
However; The biggest number referred to regularly is a googolplex (10googol), which works out as 1010^100. That isn’t the end to numbers but it is a huge one. We will replace that with ‘all the numbers in the world’. 
106 is the exponent equivalent to 1 million 
So your question would be:
106 x 1010^100 = 
However I don’t believe there is a calculator that large.
        
             
        
        
        
The distance formula is d=√(x2-x1)² + (y2-y1)²
So... d =8.06226
Hope this helps