What is the sum of the first 20 terms of the arithmetic sequence shown? \displaystyle \frac{1}{3} 3 1 ​ , \displaystyle \frac{2}{3} 3 2 ​ , 1, \displaystyle \frac{4}{3} 3 4 ​ , \displaystyle \frac{5}{3} 3 5 ​ , ...

70

Step-by-step explanation:

= First term =

= Common difference =

= Number of terms = 20

Sum of arithmetic progression is given by

The sum of the first 20 terms of the arithmetic sequence is 70.

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step-by-step explanation:

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