Question

What is the sum of the series?
6
∑ (-2k+5)
k=3

Answer 1

The answer is 4

Explanation:

Answer 2

K= 3 is the starting value for k. The number six means the sum of 3 to 6.

Replace k with the values and solve:

K = 3 = -2(3) + 5 = -1

K = 4 = -2(4) + 5 = -3

K = 5 = -2(5) + 5 = -5

K = 6 = -2(6) + 5 = -7

Sum = -1 + -3 + -5 + -7 = -16

Sum = -16