maxloar45 maxloar45

13-05-2020
Mathematics

contestada

What is the sum of the series?
S (-5k +20)
13

What is the sum of the series S 5k 20 13 class=

Respuesta :

jimrgrant1 jimrgrant1

13-05-2020

Answer:

- 10

Step-by-step explanation:

Substitute k = 3, 4, 5, 6 into the expression and sum the terms, that is

(- 15 + 20) + (- 20 + 20) + (- 25 + 20) + (- 30 + 20)

= 5 + 0 - 5 - 10

= - 10

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