djdjddidi djdjddidi

27-08-2021
Mathematics

contestada

. Find the sum of the first 20 terms of the
arithmetic sequence 27, 22, 17, ....

Respuesta :

jcherry99 jcherry99

28-08-2021

Answer:

Step-by-step explanation:

a = 27

n = 20

d = -5

L20 = 27 + (n - 1)*d

L20 = 27 + (20-1)*_5

L20 = 27 + 19*-5

L20 = -68

Sum = (a + L)*n/2

Sum = (27 - 68)*20/2

Sum = -41 * 10

Sum = - 410

Answer Link

Otras preguntas

What is the total surface area

Mark thought it was strange that Molly left Linda’s party without saying good-bye to him, especially since they’d come together. The next week he called he

most oceanic art uses inorganic materials T/F

the sum of two numbers is 76. The difference is 24. Find the two numbers doing the elimination method

3r-34r+80 please factor this

how to answer this problem

what time period is jellyfish first appear

Given what you know about the geography and chronology of the Chavin and Nazca, what might explain the fact that the Chavin and Nazca both used underground aque

20 POINTS!!!Which ray is a bisector of angle ABC? BC BD BA BF

.......... is the slope zero

ACCESS MORE EDU ACCESS