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Q3998746 Matemática
Considere uma função quadrática f(x), real de variável real, tal que f(0) = 2 e f(−1) = f(3) = 0.
O valor máximo dessa função é
Alternativas
Q3998745 Matemática

Sejam x e y números naturais não nulos tais que Q56.png (84×50)


A soma dos possíveis valores de x é

Alternativas
Q3998744 Matemática

Os números reais x e y são tais que x2 + y2 = 6x + 2y.


O maior valor possível de x é

Alternativas
Q3998743 Matemática
O conjunto C = {11, 13, 17, 19, 23, 25, ..., 95, 97} é formado pelos números naturais de dois algarismos que não são múltiplos nem de 2 e nem de 3.

A soma dos elementos de C é
Alternativas
Q3998742 Matemática
A figura a seguir mostra um corte em uma antena parabólica por um plano que contém o seu eixo. A seção é uma parábola.

Q53.png (296×104)

No sistema de coordenadas da figura o foco da antena é o ponto (0, y).
O valor de y é
Alternativas
Q3998741 Matemática
O conjunto C é formado por todos os números inteiros N maiores que 1000 e menores que 2000 com a seguinte propriedade: N é formado por três algarismos diferentes, entre os quais um se repete. Por exemplo, 1383, 1200 e 1451 são elementos de C.
O número de elementos de C é:
Alternativas
Q3998740 Matemática
A figura abaixo mostra o cubo ABCDEFGH cuja aresta mede 60.

Q51.png (168×133)

A distância do vértice A à reta EC é, aproximadamente, (
Use o necessário: √2 = 1,41; √3 = 1,73; √6 = 2,45)
Alternativas
Q3998739 Matemática
Uma escola possui 2 professores de matemática, 3 professores de português e 4 professores de ciências. Dois desses professores são escolhidos por sorteio.

A probabilidade de que os dois professores sorteados sejam da mesma matéria é 
Alternativas
Q3998738 Matemática
O valor de Q49.png (129×50)
Alternativas
Q3998737 Matemática

A reta r passa pelos pontos (−4, 2) e (2, 6).


O ponto da reta r que possui coordenadas iguais é 

Alternativas
Q3998736 Matemática
O desenho abaixo representa uma operação de adição entre quatro números naturais: A, AB, ABC e ABCD. Cada letra representa um algarismo, letras diferentes representam algarismos diferentes e A ≠ 0. 

Q47.png (130×106)

O valor de B ‒ C + D ‒ A é: 
Alternativas
Q3998735 Matemática
Uma pirâmide regular tem base quadrada e suas faces laterais são triângulos isósceles, cada um com base medindo 4 cm e dois lados iguais medindo 6 cm cada um.

O volume dessa pirâmide em cm3 é aproximadamente

(Use se necessário: √3 = 1,73; √5 = 2,24; √7 = 2,65)
Alternativas
Q3998734 Estatística
Em uma das provas de certo concurso as notas dos dez candidatos foram as seguintes:

7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 9 | 10

O desvio padrão dessas notas é
Alternativas
Q3998733 Matemática
Maria ganhou certa quantia. Dessa quantia, retirou 30% para colocar na poupança. Do restante, retirou 20% para compras de que precisava e, do que sobrou, retirou 10% para a manutenção da casa.

Da quantia inicial, Maria ficou ainda com cerca de
Alternativas
Q3998732 Matemática

A figura a seguir mostra um quadrado e um pentágono regular com o lado AB em comum.


Q43.png (180×220)


O ângulo DCB mede

Alternativas
Q3998731 Matemática
André e Bruno são irmãos e possuem suas poupanças que, juntas, dão 1200 reais. Eles compraram um jogo contribuindo, cada um, com a mesma quantia. Essa quantia é equivalente à quarta parte da poupança de André e, também, equivalente à sexta parte da poupança de Bruno mais 25 reais.

O preço do jogo comprado pelos irmãos foi de
Alternativas
Q3998730 Matemática
A expressão Q41.png (46×50) é igual a
Alternativas
Q3998594 Inglês
Read Text V and answer the question that follows.


Text V


Structural and pedagogical problems hinder the use of technology


    Three out of four teachers in Brazil show support for the use of artificial intelligence (AI) as a teaching tool. They also say that the technology has impacted education both positively, with faster access to information, and negatively, as students lose their focus.

    The data can be found in an unprecedented survey by Semesp Institute, an organization that represents higher education providers. The study was carried out between March 18 and 31 with 444 public and private school teachers from kindergarten to high school located in all regions of Brazil.

    In the study, 74.8 percent of respondents partially or totally agree with the use of artificial intelligence in teaching. Despite this, just over a third (39.2%) of them said they always use it as a teaching tool.

    Even though educators believe it is important to use AI, they also report structural and pedagogical problems that prevent or hinder its employment. Further issues were reported in connection with its excessive use, especially by pupils. Among these problems are the lack of internet at school, the lack of training for teachers and also greater difficulty in holding students’ attention.

    “I sense students have become more dependent on research tools and immediate answers and have a hard time having resilience and patience and acting as problem solvers,” an anonymous teacher who took part in the survey said.

    Another one said: “Technology has advanced, but sometimes access to it at school is not satisfactory. Poor internet connection. The computer lab is a restricted space. No Microsoft Office in the mobile lab. The use of cell phones is impractical as students have no internet. Now, even the internet is restricted to teachers.”

    Just under half of the teachers (45.7%) declared that both teachers and students have access to computers and the internet where they teach. Another seven percent answered there is still no access to technology in their schools. 

    Teachers also report that technology has made students lose their focus. “The school can’t keep up with the use of new technologies at the speed that the students can, which leads to a mismatch between the lesson taught and the lesson that the students want. The unbridled use of social media and the high level of exposure of young people to these networks have undermined teachers’ contact with students,” one of the teachers stated.


From: https://agenciabrasil.ebc.com.br/en/educacao/noticia/2024-05/three-outfour-teachers-brazil-advocate-ai-teaching-tool
The key goal of integrating technology into the Brazilian National Curriculum is to: 
Alternativas
Q3998593 Pedagogia
Read Text V and answer the question that follows.


Text V


Structural and pedagogical problems hinder the use of technology


    Three out of four teachers in Brazil show support for the use of artificial intelligence (AI) as a teaching tool. They also say that the technology has impacted education both positively, with faster access to information, and negatively, as students lose their focus.

    The data can be found in an unprecedented survey by Semesp Institute, an organization that represents higher education providers. The study was carried out between March 18 and 31 with 444 public and private school teachers from kindergarten to high school located in all regions of Brazil.

    In the study, 74.8 percent of respondents partially or totally agree with the use of artificial intelligence in teaching. Despite this, just over a third (39.2%) of them said they always use it as a teaching tool.

    Even though educators believe it is important to use AI, they also report structural and pedagogical problems that prevent or hinder its employment. Further issues were reported in connection with its excessive use, especially by pupils. Among these problems are the lack of internet at school, the lack of training for teachers and also greater difficulty in holding students’ attention.

    “I sense students have become more dependent on research tools and immediate answers and have a hard time having resilience and patience and acting as problem solvers,” an anonymous teacher who took part in the survey said.

    Another one said: “Technology has advanced, but sometimes access to it at school is not satisfactory. Poor internet connection. The computer lab is a restricted space. No Microsoft Office in the mobile lab. The use of cell phones is impractical as students have no internet. Now, even the internet is restricted to teachers.”

    Just under half of the teachers (45.7%) declared that both teachers and students have access to computers and the internet where they teach. Another seven percent answered there is still no access to technology in their schools. 

    Teachers also report that technology has made students lose their focus. “The school can’t keep up with the use of new technologies at the speed that the students can, which leads to a mismatch between the lesson taught and the lesson that the students want. The unbridled use of social media and the high level of exposure of young people to these networks have undermined teachers’ contact with students,” one of the teachers stated.


From: https://agenciabrasil.ebc.com.br/en/educacao/noticia/2024-05/three-outfour-teachers-brazil-advocate-ai-teaching-tool
The Brazilian National Curriculum (BNCC) proposes that technology and digital skills should be: 
Alternativas
Q3998592 Inglês
Read Text V and answer the question that follows.


Text V


Structural and pedagogical problems hinder the use of technology


    Three out of four teachers in Brazil show support for the use of artificial intelligence (AI) as a teaching tool. They also say that the technology has impacted education both positively, with faster access to information, and negatively, as students lose their focus.

    The data can be found in an unprecedented survey by Semesp Institute, an organization that represents higher education providers. The study was carried out between March 18 and 31 with 444 public and private school teachers from kindergarten to high school located in all regions of Brazil.

    In the study, 74.8 percent of respondents partially or totally agree with the use of artificial intelligence in teaching. Despite this, just over a third (39.2%) of them said they always use it as a teaching tool.

    Even though educators believe it is important to use AI, they also report structural and pedagogical problems that prevent or hinder its employment. Further issues were reported in connection with its excessive use, especially by pupils. Among these problems are the lack of internet at school, the lack of training for teachers and also greater difficulty in holding students’ attention.

    “I sense students have become more dependent on research tools and immediate answers and have a hard time having resilience and patience and acting as problem solvers,” an anonymous teacher who took part in the survey said.

    Another one said: “Technology has advanced, but sometimes access to it at school is not satisfactory. Poor internet connection. The computer lab is a restricted space. No Microsoft Office in the mobile lab. The use of cell phones is impractical as students have no internet. Now, even the internet is restricted to teachers.”

    Just under half of the teachers (45.7%) declared that both teachers and students have access to computers and the internet where they teach. Another seven percent answered there is still no access to technology in their schools. 

    Teachers also report that technology has made students lose their focus. “The school can’t keep up with the use of new technologies at the speed that the students can, which leads to a mismatch between the lesson taught and the lesson that the students want. The unbridled use of social media and the high level of exposure of young people to these networks have undermined teachers’ contact with students,” one of the teachers stated.


From: https://agenciabrasil.ebc.com.br/en/educacao/noticia/2024-05/three-outfour-teachers-brazil-advocate-ai-teaching-tool
The text concludes that uncontrolled exposure to social media has shown to be: 
Alternativas
Respostas
4081: B
4082: C
4083: B
4084: A
4085: B
4086: C
4087: A
4088: E
4089: A
4090: E
4091: B
4092: C
4093: D
4094: D
4095: C
4096: D
4097: E
4098: E
4099: C
4100: D