Articles
Register
Sign In
Search
User2703
@User2703
January 2020
1
28
Report
A)12cm
b)14cm
c)16cm
d)18cm
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
rosanev
Lado1 = x
Lado2 = x + 4
Amoldura = 132cm²
Afoto = 10.6 = 60cm²
Atotal = Amoldura + Afoto = 132 + 60 = 192cm²
A retângulo = Atotal = Lado1 * Lado2
192 = x(x + 4)
192 = x² + 4x
x² + 4x - 192 = 0
Δ = (4²) - 4.1.(-192) = 16 + 768 = 784
x' = (-4 + √784)/2 = -4 + 28/2 = 24/2 = 12cm
x" = (-4 - √784)/2 = - (não existe área negativa)
X= 12cm
Resposta:
A
2 votes
Thanks 1
More Questions From This User
See All
user2703
November 2023 | 0 Respostas
Responda
user2703
October 2023 | 0 Respostas
Responda
user2703
October 2023 | 0 Respostas
Responda
user2703
October 2023 | 0 Respostas
Responda
user2703
June 2023 | 0 Respostas
Responda
user2703
May 2023 | 0 Respostas
Responda
user2703
May 2023 | 0 Respostas
Responda
User2703
January 2020 | 0 Respostas
Responda
User2703
January 2020 | 0 Respostas
*Valendo 20 pontos* *Veja as imagens*
Responda
User2703
January 2020 | 0 Respostas
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 "A)12cm b)14cm c)16cm d)18cm.... Pergunta de ideia de User2703"
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
Lado2 = x + 4
Amoldura = 132cm²
Afoto = 10.6 = 60cm²
Atotal = Amoldura + Afoto = 132 + 60 = 192cm²
A retângulo = Atotal = Lado1 * Lado2
192 = x(x + 4)
192 = x² + 4x
x² + 4x - 192 = 0
Δ = (4²) - 4.1.(-192) = 16 + 768 = 784
x' = (-4 + √784)/2 = -4 + 28/2 = 24/2 = 12cm
x" = (-4 - √784)/2 = - (não existe área negativa)
X= 12cm
Resposta: A