Express the sum using summation notation.
-$$\sum _ { k = 3 } ^ { 6 } \frac { - 6 } { k }$$
A) 277
B) $- \frac { 57 } { 10 }$
C) $\frac { 17 } { 10 }$
D) $- \frac { 80 } { 27 }$

Question

Quizplus · Accepted Answer

The given expression already is in summation notation, representing the sum of $\frac{-6}{k}$ for $k$ values from 3 to 6. Calculating the sum: $\frac{-6}{3} + \frac{-6}{4} + \frac{-6}{5} + \frac{-6}{6} = -2 - 1.5 - 1.2 - 1 = -5.7 = - \frac{57}{10}$.

Express the Sum Using Summation Notation ∑k=36−6k\sum _ { k = 3 } ^ { 6 } \frac { - 6 } { k }k=3∑6​k−6​

Express the Sum Using Summation Notation $\sum _ { k = 3 } ^ { 6 } \frac { - 6 } { k }$