Magna Concursos

Foram encontradas 810 questões.

A soma de todas as soluções reais da equação

\(1 + \dfrac{1}{x} = x\)

é igual a:

Note e adote: Considere x ≠ 0.

 

 

Provas

Questão presente nas seguintes provas

Ao analisar a Nota Fiscal de uma compra realizada em um supermercado, um consumidor notou a seguinte informação:

Valor Aproximado de Tributos Federais: R$ 24,00
Valor Aproximado de Tributos Estaduais: R$ 30,00

Se o valor total pago pela compra foi de R$ 180,00, é correto afirmar que as respectivas taxas de Tributos Federais e de Tributos Estaduais aplicadas na compra do consumidor foram, aproximadamente, de

 

Provas

Questão presente nas seguintes provas
Enunciado 3736470-1
Na figura, ABCD é um retângulo, e E e F são pontos no segmento BC. Se indicarmos por A1 a área do triângulo ABD, por A2 a área do triângulo AED e por A3 a área do triângulo AFD, é correto afirmar:
 

Provas

Questão presente nas seguintes provas
Dizemos que dois números primos são gêmeos se a diferença entre eles é dois. Por exemplo, 5 e 7 são números primos gêmeos. Assinale a alternativa que apresenta dois números primos gêmeos.
 

Provas

Questão presente nas seguintes provas
Se três pessoas levam juntas 15 horas para realizar uma determinada tarefa, quanto tempo 10 pessoas igualmente capazes levarão para realizar a mesma tarefa, trabalhando no mesmo ritmo e sob as mesmas condições?
 

Provas

Questão presente nas seguintes provas
O termo “pace” é utilizado entre corredores amadores e profissionais. É uma palavra de língua inglesa que significa “ritmo”. O pace é definido como sendo o tempo (em minutos) que o(a) atleta leva para percorrer 1 quilômetro, em média. Por exemplo, um(a) corredor(a) com pace 6 min/km leva, em média, 6 minutos para percorrer 1 quilômetro. Em 31 de dezembro de 2024, a brasileira Núbia de Oliveira ficou em terceiro lugar na categoria feminina da Corrida de São Silvestre, realizada em São Paulo, em que completou o trecho de 15 quilômetros em 53 minutos e 24 segundos. Conclui-se que o pace de Núbia, nessa prova, ficou mais próximo de:
 

Provas

Questão presente nas seguintes provas
Synesthesia is when you hear music, but you see shapes. Or you hear a word or a name and instantly see a color. Synesthesia is a name for when you experience one of your senses through another. For example, you might hear the name "Alex" and see green. Or you might read the word "street" and taste citrus fruit.
        The word "synesthesia" has Greek roots. It translates to “perceive together.” Synesthesia isn’t a disease or disorder. It won’t harm your health, and it doesn’t mean you’re mentally ill. Some studies suggest people who have it may do better on memory and intelligence tests than those who don’t.
        One of the most common responses is to see letters, numbers, or sounds as colors. You might also see or hear a word and taste food; hear sounds and see shapes or patterns; feel a touch when seeing someone else being touched. (This is called mirror touch.)
        It can be an annoyance. But most synesthetes see their condition as a sixth sense, not a drawback.
        You can’t control it. The response happens right away. For example, if you hear a new piece of music, you may see a color or taste a flavor without any effort. It just happens.
        It’s internal, mostly. The colors are just in your mind.
        It stays the same over time. If you see the letter "A" in green today, you’ll see it in green 10 years from now.
        It often starts in childhood. Studies of kids with synesthesia found that it develops over time.
webmd.com. December 17, 2024. Adaptado. 
De acordo com o texto apresentado, a sinestesia pode ser descrita como
 

Provas

Questão presente nas seguintes provas

Scientists have found that generally the world feels brighter when you wake up.

People start the day in the best frame of mind in the morning, but end in the worst, at about midnight, the findings suggest, with the day of the week and the season also playing a part.

Mental health also tends to be more varied at weekends but steadier during the week, according to the study led by University College London.

“Generally, things do seem better in the morning,” the researchers concluded.

Mental health and wellbeing are dynamic in nature, and subject to change over short and long periods. However, few studies have looked at how they might change over the course of the day.

Scientists wanted to explore whether time of day was associated with variations in mental health, happiness, life satisfaction, sense of life being worthwhile and loneliness.

People in the study answered questionnaires, with questions such as: “In the past week, how happy did you feel?”, “How satisfied have you been with your life?”, and “To what extent have you felt the things you are doing in your life are worthwhile?”

Factors such as age, health conditions and whether people worked were taken into account.

The results showed that happiness, life satisfaction, and worthwhile ratings were all higher on Mondays and Fridays than on Sundays, while happiness was also higher on Tuesdays. There was no evidence that loneliness differed across days of the week.

There was clear evidence of a seasonal influence on mood. Compared with winter, people tended to have lower levels of depressive and anxiety symptoms and loneliness, and higher levels of happiness, and feeling that life was worthwhile in the three other seasons.

Mental health was best in the summer across all outcomes. But the season didn’t affect the associations observed across the day, however.

This was an observational study, so it cannot establish cause.

The Guardian.com. February 5, 2025. Adaptado.

No trecho “Factors such as age, health conditions and whether people worked were taken into account” (8º parágrafo), o termo "whether" indica
 

Provas

Questão presente nas seguintes provas

Scientists have found that generally the world feels brighter when you wake up.

People start the day in the best frame of mind in the morning, but end in the worst, at about midnight, the findings suggest, with the day of the week and the season also playing a part.

Mental health also tends to be more varied at weekends but steadier during the week, according to the study led by University College London.

“Generally, things do seem better in the morning,” the researchers concluded.

Mental health and wellbeing are dynamic in nature, and subject to change over short and long periods. However, few studies have looked at how they might change over the course of the day.

Scientists wanted to explore whether time of day was associated with variations in mental health, happiness, life satisfaction, sense of life being worthwhile and loneliness.

People in the study answered questionnaires, with questions such as: “In the past week, how happy did you feel?”, “How satisfied have you been with your life?”, and “To what extent have you felt the things you are doing in your life are worthwhile?”

Factors such as age, health conditions and whether people worked were taken into account.

The results showed that happiness, life satisfaction, and worthwhile ratings were all higher on Mondays and Fridays than on Sundays, while happiness was also higher on Tuesdays. There was no evidence that loneliness differed across days of the week.

There was clear evidence of a seasonal influence on mood. Compared with winter, people tended to have lower levels of depressive and anxiety symptoms and loneliness, and higher levels of happiness, and feeling that life was worthwhile in the three other seasons.

Mental health was best in the summer across all outcomes. But the season didn’t affect the associations observed across the day, however.

This was an observational study, so it cannot establish cause.

The Guardian.com. February 5, 2025. Adaptado.

De acordo com o texto, a relação entre estações do ano e variação emocional torna mais plausível a inferência de que
 

Provas

Questão presente nas seguintes provas
        The idea of time blindness, or difficulty perceiving and managing time, has spread across social media. While there is no diagnosis for it, some people explain that, despite their best efforts, they frequently lose track of time, underestimate or overestimate how long tasks will take, show up late, and miss deadlines.
        Time blindness is a psychological phenomenon that nearly everyone experiences from time to time, said Michael Manos, at the Cleveland Clinic.
        “Who doesn’t get completely occupied with a hobby or a conversation they’re having with somebody, or some kind of activity that is so interesting that it occupies attention, and it takes attention away from other things that might be pressing?” he said.
        Not all experts agree, but some suggest that it could be a limitation for some people.
        Renae Beaumont, an associate professor of psychology in clinical psychiatry, said time blindness and flow, a state of intense focus in an activity that is engaging, enjoyable and temporarily distracts from the passage of time, are different phenomena.
        “Flow is typically associated with positive emotions when you’re doing something you enjoy, and you are able to shift to a different task when you need to. Time blindness involves getting stuck, losing track of time and typically having trouble transitioning to a different task,” she said.
        There is no clear consensus, but some researchers consider time blindness to be an impairment in temporal perception, or the way the brain experiences time.
        Certain strategies may help people who struggle with time perception and management, experts said. 
        Use digital reminders including alarms, timers and calendars to keep track of appointments, dates and deadlines.
Washington Post. February 5, 2025. Adaptado.
No trecho "Who doesn’t get completely occupied with a hobby or a conversation they’re having with somebody, or some kind of activity that is so interesting that it occupies attention" (3º parágrafo), o pronome "they" refere-se¬
 

Provas

Questão presente nas seguintes provas