Find the sum.\\ $\sum_{k=0}^{19} \frac{k-4}{9}$ \\ The sum is $oxed{\text{ }}$ .\\ (Simplify your answer.)
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The formula is \sum_(k=0)^(19) (k-4)/(9), which means we are summing up the terms (k-4)/9 for k ranging from 0 to 19. Show more…
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