Answer:
The explicit formula for a given geometric sequence is of the form

Step-by-step explanation:
Given sequence is 
Let  
 
To find the common ratio r:



Therefore r=-3



Therefore r=-3
Therefore common ratio is -3
Therefore given sequence is geometric sequence.
The explicit formula for a geometric sequence is  , where common ratio is r.
, where common ratio is r.
From given sequence we are having  r=-3
Therefore the explicit formula for a given geometric sequence is of the form 


 
        
             
        
        
        
The solution is 6 
9x6+3=57
        
                    
             
        
        
        
Answer:
57
Step-by-step explanation:
 
        
                    
             
        
        
        
Semiarid, 
Source: Quizlet Science lesson 21 Climate Regions
        
                    
             
        
        
        
Answer:0.9991
Step-by-step explanation:
The Poisson distribution probability formula is given by :-
 , where \lambda is the mean of the distribution and x is the number of success
, where \lambda is the mean of the distribution and x is the number of success 
Given : 
The probability that more than 1 student will have his automobile stolen during the current semester is given by :-

Hence, the  probability that more than 1 student will have his automobile stolen during the current semester =0.9991