Articles
Register
Sign In
Search
JoaoVinicius99
@JoaoVinicius99
December 2019
2
90
Report
Dada a PA (1,3,5,7...)
Qual a soma dos 20 primeiros termos?
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
Charda
1-3=2. r=2
An=a¹+(n-1)•r
an=1+(20-1)•2
an=1+19•2
an=1+38
an=39
sn=(a¹+an)•n/2
sn=(1+39)•20/2
sn=40•20/2
sn=800/2
sn=400
ta certinho!
4 votes
Thanks 6
jjzejunio
Formula: an = a1 + (n - 1).r
an = ?
a1 = 1
n = 20
r = 2
an = 1 + (20 - 1).2
an = 1 + 19.2
an = 1 + 38
an = 39
Sn = (a1 + an).n/2
Sn = (1 + 39).20/2
Sn = 40.20/2
Sn = 800/2
Sn = 400
A soma dos 20 primeiros termos é 400.
1 votes
Thanks 5
Charda
obgd por confirmar minha resposta :)
JoaoVinicius99
MT obg
More Questions From This User
See All
JoaoVinicius99
January 2020 | 0 Respostas
Qual foi o primeiro presidente negro na Africa do sul??
Responda
JoaoVinicius99
January 2020 | 0 Respostas
Responda
JoaoVinicius99
December 2019 | 0 Respostas
Dada a Pg ( -8,-2,4,10...) Que o 66 termo?
Responda
JoaoVinicius99
December 2019 | 0 Respostas
Dada a Pg ( 4,8,16,32...) Qual o 15 termo?
Responda
JoaoVinicius99
December 2019 | 0 Respostas
Dada a Pg (4,8,16,32...) Qual a soma dos 20 primeiros termos?
Responda
JoaoVinicius99
December 2019 | 0 Respostas
Dada a Pg ( 4,8,16,32...) Qual a soma dos 10 primeiros termos?
Responda
Recomendar perguntas
Deividyfreitas
May 2020 | 0 Respostas
BlackShot
May 2020 | 0 Respostas
Vanessakellen
May 2020 | 0 Respostas
Guiduarter
May 2020 | 0 Respostas
Mrzaine
May 2020 | 0 Respostas
O QUE SERIA AUTONOMIA?
Grazifer
May 2020 | 0 Respostas
Joazinho
May 2020 | 0 Respostas
a palavra rapidez formou se de qual derivacao
Celiana
May 2020 | 0 Respostas
Joazinho
May 2020 | 0 Respostas
Anatercia
May 2020 | 0 Respostas
×
Report "Dada a PA (1,3,5,7...) Qual a soma dos 20 primeiros termos?.... Pergunta de ideia de JoaoVinicius99"
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
An=a¹+(n-1)•r
an=1+(20-1)•2
an=1+19•2
an=1+38
an=39
sn=(a¹+an)•n/2
sn=(1+39)•20/2
sn=40•20/2
sn=800/2
sn=400
ta certinho!
an = ?
a1 = 1
n = 20
r = 2
an = 1 + (20 - 1).2
an = 1 + 19.2
an = 1 + 38
an = 39
Sn = (a1 + an).n/2
Sn = (1 + 39).20/2
Sn = 40.20/2
Sn = 800/2
Sn = 400
A soma dos 20 primeiros termos é 400.