Articles
Register
Sign In
Search
alflen209
@alflen209
April 2022
2
31
Report
Determine a soma dos termos da cada Pa:
A) (86, 83, 80, ... 35)
Please enter comments
Please enter your name.
Please enter the correct email address.
Agree to
terms and service
You must agree before submitting.
Send
Lista de comentários
LeleMaxter
Verified answer
R = a1 - a1 => 83 - 86 = -3
a1 = 86
an = 35
n = ?
an = a1 + (n - 1) . r
35 = 86 + (n - 1). (-3)
35 = 86 - 3n +3
3n = 89 - 35
3n = 54
n = 54 / 3
n = 18
Sn =
(a1 + an
)
. n
2
Sn = (
86 + 35) . 18
2
Sn =
121 . 18
2
Sn = 1089
20 votes
Thanks 38
Helvio
Verified answer
Determinar a razão:
r = a2 - a1
r = 83 - 86
r = -3
Determinar quantos termos tem a PA
an = a1 + ( n -1) * r
35 = 86 + ( n -1) * -3
35 = 86 - 3n + 3
35 = 89 - 3n
-54 = -3n
n = 18
PA com 18 termos:
===============
Determinar a soma dos termos:
Sn = ( a1 + an ) * n / 2
Sn = ( 86 + 35 ) * 18 / 2
Sn = 121 * 9
Sn = 1089
Soma dos termos = 1.089
5 votes
Thanks 4
More Questions From This User
See All
alflen209
April 2022 | 0 Respostas
determine a soma dos termos da PA; A) ( 3, 11,19, ..., 115) B) (86, 83, 80, ..., 35)
Responda
alflen209
April 2022 | 0 Respostas
Calcule a soma dos primeiros: A) 15 termos da Pa (5, 9, 13, ...)
Responda
alflen209
April 2022 | 0 Respostas
Calcule a soma dos primeiro: 36 termos da Pa (17, 11, 5, ... )
Responda
alflen209
April 2022 | 0 Respostas
Responda
alflen209
April 2022 | 0 Respostas
Responda
alflen209
April 2022 | 0 Respostas
Responda
alflen209
April 2022 | 0 Respostas
Responda
alflen209
April 2022 | 0 Respostas
Responda
alflen209
April 2022 | 0 Respostas
Responda
alflen209
April 2022 | 0 Respostas
Responda
×
Report "Determine a soma dos termos da cada Pa: A) (86, 83, 80, ... 35).... Pergunta de ideia de alflen209"
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
Helpful Links
Sobre nós
Política de Privacidade
Termos e Condições
direito autoral
Contate-Nos
Helpful Social
Get monthly updates
Submit
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
Verified answer
R = a1 - a1 => 83 - 86 = -3a1 = 86
an = 35
n = ?
an = a1 + (n - 1) . r
35 = 86 + (n - 1). (-3)
35 = 86 - 3n +3
3n = 89 - 35
3n = 54
n = 54 / 3
n = 18
Sn = (a1 + an) . n
2
Sn = (86 + 35) . 18
2
Sn = 121 . 18
2
Sn = 1089
Verified answer
Determinar a razão:r = a2 - a1
r = 83 - 86
r = -3
Determinar quantos termos tem a PA
an = a1 + ( n -1) * r
35 = 86 + ( n -1) * -3
35 = 86 - 3n + 3
35 = 89 - 3n
-54 = -3n
n = 18
PA com 18 termos:
===============
Determinar a soma dos termos:
Sn = ( a1 + an ) * n / 2
Sn = ( 86 + 35 ) * 18 / 2
Sn = 121 * 9
Sn = 1089
Soma dos termos = 1.089