To conduct an experiment, researches randomly select six students from a class of 20. How many different groups of six students
1 answer:
You might be interested in
1) given
2) definition of an angle bisector
3) reflexive
4) (ASA)
5) (CPCTC)
For 
, 
, all the more 
, therefore no solution.
For
, we have 
. Obviously that' false.
For
both 
and 
, where 
, belong to the range 
, then 
belong to the range 
.
Those ranges don't have a common part, therefore, again, no solution.
So, the equation
doesn't have a solution.
For
For
Those ranges don't have a common part, therefore, again, no solution.
So, the equation