The first missing number in the sequence is 35, and the last missing number is 77.
<h3>Next number of the given sequence</h3>
The two missing numbers in the given sequence is calculated as follows;
= ?    49     63    ?
The given sequence is factor 7 which increases by 2
= 7 x 5      7 x 7       7 x 9     7 x 11
= 35         49          63          77
Thus, the first missing number in the sequence is 35, and the last missing number is 77.
Learn more about sequence here: brainly.com/question/6561461
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The radius is 2 and area = r^2*pi so 4*pi gives you 12.56 so the exact answer would be 12.56 and the answer with pi would be 4 times 3.14!
        
             
        
        
        
If the base is 2 and the exponent is the the expression would look like this → 2³. In order to simplify it, you have to multiply the base number by the number of the exponent. 
2×2×2=8
Therefore, the simplified expression would be 8.
I hope this helped.
        
                    
             
        
        
        
The answer to the question is 1
 
        
        
        
Answer:
21,678 rounded to the nearest ten is 21,680