Foram encontradas 910 questões

Resolva questões gratuitamente!

Junte-se a mais de 4 milhões de concurseiros!

Q671921 Raciocínio Lógico

Em relação à teoria dos conjuntos, considere as seguintes afirmativas relacionadas aos conjuntos A, B e C:

I. Se A B e B C então A C.

II. Se A B e B C então A C.

III. Se A B e B C então A C.

Estão corretas:

Alternativas
Q671920 Matemática
Sejam x e y números reais. Assinale a alternativa correta:
Alternativas
Q671919 Matemática
O valor de cos 2π/7 + cos 4π/7+ cos 6π/7 + 1/2 é:
Alternativas
Q671918 Matemática
O pipoqueiro cobra o valor de R$ 1,00 por saco de pipoca. Ele começa seu trabalho sem qualquer dinheiro para troco. Existem oito pessoas na fila do pipoqueiro, das quais quatro têm uma moeda de R$ 1,00 e quatro uma nota de R$ 2,00. Supondo uma arrumação aleatória para a fila formada pelas oito pessoas e que cada uma comprará exatamente um saco de pipoca, a probabilidade de que o pipoqueiro tenha troco para as quatro pessoas que pagarão com a nota de R$ 2,00 é:
Alternativas
Q671917 Matemática

O valor de y real positivo na equação Imagem associada para resolução da questão, onde x é um número real maior do que 1 é:

Alternativas
Q671916 Matemática

Uma reta, com coeficiente angular a1, passa pelo ponto (0,-1). Uma outra reta, com coeficiente angular a2, passa pelo ponto (0,1). Sabe-se que Imagem associada para resolução da questão. O lugar geométrico percorrido pelo ponto de interseção das duas retas é uma: 

Alternativas
Q671915 Matemática

Sejam x1, .... xn os n primeiros termos de uma progressão aritmética, O primeiro termo e a razão desta progressão são os números reais x1 e r, respectivamente. O determinante

Imagem associada para resolução da questãoé:

Alternativas
Q671914 Matemática
A base de uma pirâmide é um retângulo de área S. Sabe-se que duas de suas faces laterais são perpendiculares ao plano da base. As outras duas faces formam ângulos de 30° e 60° com a base. O volume da pirâmide é:
Alternativas
Q671913 Matemática
O valor de x que satisfaz a equação sen (arccotg(1+x) = cos(arctg(x)):
Alternativas
Q671912 Matemática

Seja o triângulo retângulo ABC com os catetos medindo 3 cm e 4cm. Os diâmetros dos três semicírculos, traçados na figura abaixo, coincidem com os lados do triângulos ABC. A soma das áreas hachuradas, em cm2, é : 

                                      Imagem associada para resolução da questão

Alternativas
Q670901 Inglês

The U.S. Department of Homeland Security (DHS), which operates airport security checkpoints in the United States, is spending upward of US$ 7 million a year trying to develop technology that can detect the evil intent of the terrorists among us. Yes, you read that correctly: They plan to find the bad guys by reading their minds.

Dozens of researchers across the country are in the middle of a five year program contracted primarily to the Charles Stark Draper Laboratory, in Cambridge, Mass. They’ve developed a psycho-physiological theory of ‘malintent’ – basically, a hodgepodge of behaviorism and biometrics according to which physiological chances can give away a terrorist’s intention to do immediate harm. So far, they’ve spent US$ 20 million on biometric research, sensors, and a series of tests and demonstrations. This technology is called the Future Attribute Screening Technology (FAST).

The underlying theory is that your body reacts, in measurable and largely involuntary ways, to reveal the nature of your intentions. So as you wait in line at the airport checkpoint, thermal and other types of cameras and laser- and radar-based sensors will try to get a fix on the baseline parameters of your autonomic nervous system – your body temperature, your heart rate and respiration, your skin’s moistness, and the very look in your eyes. Then, as a security officer asks you a few questions, the sensors will remeasure those parameters so that the FAST algorithms can figure out whether you’re naughty or nice, all on the spot, without knowing anything else about you.

According to the text, your body temperature, your heart rate and respiration, your skin’s moistness, and the very look in your eyes …
Alternativas
Q670900 Inglês

The U.S. Department of Homeland Security (DHS), which operates airport security checkpoints in the United States, is spending upward of US$ 7 million a year trying to develop technology that can detect the evil intent of the terrorists among us. Yes, you read that correctly: They plan to find the bad guys by reading their minds.

Dozens of researchers across the country are in the middle of a five year program contracted primarily to the Charles Stark Draper Laboratory, in Cambridge, Mass. They’ve developed a psycho-physiological theory of ‘malintent’ – basically, a hodgepodge of behaviorism and biometrics according to which physiological chances can give away a terrorist’s intention to do immediate harm. So far, they’ve spent US$ 20 million on biometric research, sensors, and a series of tests and demonstrations. This technology is called the Future Attribute Screening Technology (FAST).

The underlying theory is that your body reacts, in measurable and largely involuntary ways, to reveal the nature of your intentions. So as you wait in line at the airport checkpoint, thermal and other types of cameras and laser- and radar-based sensors will try to get a fix on the baseline parameters of your autonomic nervous system – your body temperature, your heart rate and respiration, your skin’s moistness, and the very look in your eyes. Then, as a security officer asks you a few questions, the sensors will remeasure those parameters so that the FAST algorithms can figure out whether you’re naughty or nice, all on the spot, without knowing anything else about you.

What is true about the ideas mentioned in the text?
Alternativas
Q670899 Inglês

The U.S. Department of Homeland Security (DHS), which operates airport security checkpoints in the United States, is spending upward of US$ 7 million a year trying to develop technology that can detect the evil intent of the terrorists among us. Yes, you read that correctly: They plan to find the bad guys by reading their minds.

Dozens of researchers across the country are in the middle of a five year program contracted primarily to the Charles Stark Draper Laboratory, in Cambridge, Mass. They’ve developed a psycho-physiological theory of ‘malintent’ – basically, a hodgepodge of behaviorism and biometrics according to which physiological chances can give away a terrorist’s intention to do immediate harm. So far, they’ve spent US$ 20 million on biometric research, sensors, and a series of tests and demonstrations. This technology is called the Future Attribute Screening Technology (FAST).

The underlying theory is that your body reacts, in measurable and largely involuntary ways, to reveal the nature of your intentions. So as you wait in line at the airport checkpoint, thermal and other types of cameras and laser- and radar-based sensors will try to get a fix on the baseline parameters of your autonomic nervous system – your body temperature, your heart rate and respiration, your skin’s moistness, and the very look in your eyes. Then, as a security officer asks you a few questions, the sensors will remeasure those parameters so that the FAST algorithms can figure out whether you’re naughty or nice, all on the spot, without knowing anything else about you.

What expression could replace ‘malintent’ in the second paragraph still keeping the same meaning for the text?
Alternativas
Q670898 Inglês

The U.S. Department of Homeland Security (DHS), which operates airport security checkpoints in the United States, is spending upward of US$ 7 million a year trying to develop technology that can detect the evil intent of the terrorists among us. Yes, you read that correctly: They plan to find the bad guys by reading their minds.

Dozens of researchers across the country are in the middle of a five year program contracted primarily to the Charles Stark Draper Laboratory, in Cambridge, Mass. They’ve developed a psycho-physiological theory of ‘malintent’ – basically, a hodgepodge of behaviorism and biometrics according to which physiological chances can give away a terrorist’s intention to do immediate harm. So far, they’ve spent US$ 20 million on biometric research, sensors, and a series of tests and demonstrations. This technology is called the Future Attribute Screening Technology (FAST).

The underlying theory is that your body reacts, in measurable and largely involuntary ways, to reveal the nature of your intentions. So as you wait in line at the airport checkpoint, thermal and other types of cameras and laser- and radar-based sensors will try to get a fix on the baseline parameters of your autonomic nervous system – your body temperature, your heart rate and respiration, your skin’s moistness, and the very look in your eyes. Then, as a security officer asks you a few questions, the sensors will remeasure those parameters so that the FAST algorithms can figure out whether you’re naughty or nice, all on the spot, without knowing anything else about you.

Considering the central idea of the passage, which of the following suggested titles is suitable to the text?
Alternativas
Q670897 Inglês

As both an electrical engineer and a Jesuit priest, Lammert B. Otten can lead a spiritual retreat just as easily as a dam-building project in Zambia. “As an engineer,” he says, “you’re concreting with God to make life better for people.”


What task below could Lammert B. Otten be legally in charge of?

Alternativas
Q670896 Inglês

It’s a little surprising that the land of Sir Isaac Newton does not have its own space agency. An attempt to fill that void came with the announcement in June that the United Kingdom would create a ‘bureaucracy busting’ organization to oversee British civilian space and satellite activities.


What does the author of the passage refer to by the term “void”?

Alternativas
Q670895 Inglês
An old axiom says that in order to know where you are going, you first have to know where you are. To that, add that you should know which way you are facing. Makers of wireless handsets, proving the old axiom true, have already installed Global Positioning System (GPS) receivers, and are now poised to flood the market with phones containing tiny electronic compasses that allow the gadget to sense exactly what direction it’s facing.
What is known about the makers of wireless handsets?
Alternativas
Q670894 Inglês
An old axiom says that in order to know where you are going, you first have to know where you are. To that, add that you should know which way you are facing. Makers of wireless handsets, proving the old axiom true, have already installed Global Positioning System (GPS) receivers, and are now poised to flood the market with phones containing tiny electronic compasses that allow the gadget to sense exactly what direction it’s facing.
Complete the sentence according to the text: “ A (an) _____ will let you know where you are, whereas to know which direction you are looking you need a (an) ______.
Alternativas
Q670893 Inglês
An old axiom says that in order to know where you are going, you first have to know where you are. To that, add that you should know which way you are facing. Makers of wireless handsets, proving the old axiom true, have already installed Global Positioning System (GPS) receivers, and are now poised to flood the market with phones containing tiny electronic compasses that allow the gadget to sense exactly what direction it’s facing.
What general idea underlies the paragraph?
Alternativas
Q670892 Inglês
Recently, I was looking for something online, or probably browsing aimlessly, when I happened on a name I hadn’t thought of since I was a child: Alfred P. Morgan. Someone had uploaded a digitized version of The Boy Electrician. I was instantly swept back more than half a century to my local library. In my mind I saw the familiar metal shelving and the blue-gray binding of my favorite book, also written – and illustrated – by Morgan: The Boys’ First Book of Radio and Electronics.
Which of the following expressions is a synonym for ‘aimlessly’ on the first line of the text?
Alternativas
Respostas
781: B
782: C
783: C
784: B
785: D
786: C
787: E
788: A
789: D
790: A
791: E
792: D
793: C
794: E
795: A
796: B
797: C
798: C
799: B
800: D