Step-by-step explanation:
Any number that can be divided by 2 without having remainder is considered an even number.
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πAnswer:
Therefore, the area of a sector of a circle would be 13.5π square units.               
Step-by-step explanation:
Given 
 mi mi
The area of a sector of a circle is:
A = π r² Ф/360
A = π (9)² 60/360
A = π 81 * 1/6
A = 13.5π square units
Therefore, the area of a sector of a circle would be 13.5π square units.                        
 
        
             
        
        
        
So Maurice would have 2N nickels  
Total number of coins is N + 2N + 9 = 3N + 9  
Each nickel is 5 pennies  
3N of nickels = 15N pennies  
-----------  
Their worth is 84 cents  
15N + 9 = 84  
15N = 75  
N = 75/15 = 5  
N = 5  
This means Nina has 5 nickels.
 
        
             
        
        
        
Step-by-step explanation:
answer 30- supplying water to the plants at a specific interval
answer-31 there are five major groups of microorganisms they are : bacteria,fungi algae, protozoa,viruses.
answer-35 the process by which the young form of insects and some animals develops into adult.
answer - 37 sounds that can be here are called audible and the sound frequency that we cannot hear are called in audible sound
answer-34 the rain that contains the chemicals in it from the factories
answer-38 catract is a disease which causes blurrness in the eye lens
 
        
             
        
        
        
The explicit rule for given sequence is:

Further explanation:
We have to determine first of all if the sequence is arithmetic or geometric.
- If the difference of two consecutive terms is same then the sequence is arithmetic sequence
- If the ratio of two consecutive terms is same then the sequence is geometric sequence
Given sequence is:
12,22,32,42

The common difference is 10 which is same for all consecutive terms. So the sequence is an arithmetic sequence.
The general formula for arithmetic sequence is:

Putting the values of a1 and d

The explicit rule for given sequence is:

Keywords: Arithmetic sequence, Common Difference
Learn more about arithmetic sequence at:
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