(ESPM) Se as raízes da equação e 2x2 – 5x – 4 = 0 são m e n, o valor de é igual a:
Questões relacionadas
- Língua Espanhola | 1.3 Modelo de Questão: ENEM X Tradicional
'Desmachupizar' el turismo
Es ya un lugar común escuchar aquello de que hay que desmachupizar el turismo en Perú y buscar visitantes en las demás atracciones (y son muchas) que tiene el país, naturales y arqueológicas, pero la ciudadela inca tiene un imán innegable. La Cámara Nacional de Turismo considera que Machu Picchu significa 70% de los ingresos por turismo en Perú, ya que cada turista que tiene como primer destino la ciudadela inca visita entre tres y cinco lugares más (la ciudad de Cuzco, la de Arequipa, las líneas de Nazca, el Lago Titicaca y la selva) y deja en el país un promedio de 2200 dólares (unos 1538 euros).
Carlos Canales, presidente de Canatur, senãló que la ciudadela tiene capacidad para recibir más visitantes que en la actualidad (un máximo de 3 000) con un sistema planificado de horarios y rutas, pero no quiso avanzar una cifra. Sin embargo, la Unesco ha advertido en varias ocasiones que el monumento se encuentra cercano al punto de saturación y el Gobierno no debe emprender ninguna política de captación de nuevos visitantes, algo con lo que coincide el viceministro Roca Rey.
Disponível em: http://www.elpais.com. Acesso em: 21 jun. 2011.
A reportagem do jornal espanhol mostra a preocupação diante de um problema no Peru, que pode ser resumido pelo vocábulo "desmachupizar", referindo-se
- Geografia | 6.1 Agricultura
Os produtores de Nova Europa (SP) estão insatisfeitos com a proibição da queima e do corte manual de cana, que começou no sábado (01/03/2014) em todo o estado de São Paulo. Para eles, a produção se torna inviável, já que uma máquina chega a custar R$ 800 mil e o preço do corte dobraria. Além disso, a mecanização cortou milhares de postos de trabalho.
Sociedade Brasileira dos Especialistas em Resíduos das Produções Agropecuárias e Agroindustrial (SBERA). . Disponível em: http://sbera.org.br. Acesso em: 25 mar. 2014.
A proibição imposta aos produtores de cana tem como objetivo
- História | 5.4 Absolutismo
(FUVEST 2005 1ª FASE ) “Depois que a Bíblia foi traduzida para o inglês, todo homem, ou melhor, todo rapaz e toda rapariga, capaz de ler o inglês, convenceram-se de que falavam com Deus onipotente e que entendiam o que Ele dizia”.
Esse comentário de Thomas Hobbes (1588-1679)
- Língua Inglesa | 1.4 Reading Strategies
ENGLISH WON'T DOMINATE AS WORLD LANGUAGE
More bilingual people expected in future, expert says
1 The world faces a future of people speaking more than one language, with English no longer seen as likely to become dominant, a British language expert says in a new analysis.
2 "English is likely to remain one of the world's most important languages for the foreseeable future, but its future is more problematic - and complex - than most people appreciate," said language researcher David Graddol.
3 He sees English as likely to become the "first among equals" rather than having the global field to itself.
4 "Monolingual speakers of any variety of English - American or British - will experience increasing difficulty in employment and political life, and are likely to become bewildered by many aspects of society and culture around them," Graddol said.
5 The share of the world's population that speaks English as a native language is falling, Graddol reports in a paper in Friday's issue of the journal Science.
6 The idea of English becoming the world language to the exclusion of others "is past its sell-by date," Graddol says. Instead, its major contribution will be in creating new generations of bilingual and multilingual speakers, he reports.
MULTI-LINGUAL HOMES
7 A multi-lingual population is already the case in much of the world and is becoming more common in the United States. Indeed, the Census Bureau reported last year that nearly one American in five speaks a language other than English at home, with Spanish leading, and Chinese growing fast.
8 And that linguistic diversity, in turn, has helped spark calls to make English the nation's official language.
9 Linguist Stephen Anderson noted that multilingualism is "more or less the natural state. In most of the world multilingualism is the normal condition of people."
10 "The notion that English shouldn't, needn't and probably won't displace local languages seems natural to me," he said in a telephone interview.
11 While it is important to learn English, he added, politicians and educators need to realize that doesn't mean abandoning the native language.
12 Graddol anticipates a world where the share of people who are native English speakers slips from 9 percent in the mid-twentieth century to 5 percent in 2050.
CHINESE IN THE LEAD
13 As of 1995, he reports, English was the second most-common native tongue in the world, trailing only Chinese.
14 By 2050, he says, Chinese will continue its predominance, with Hindi-Urdu of India and Arabic climbing past English, and Spanish nearly equal to it.
15 Linguist K. David Harrison noted, however, that "the global share of English is much larger if you count second-language speakers, and will continue to rise, even as the proportion of native speakers declines."
16 Harrison disputed listing Arabic in the top three languages, "because varieties of Arabic spoken in say, Egypt and Morocco are mutually incomprehensible."
17 Even as it grows as a second language, English may still not ever be the most widely spoken language in the world, according to Graddol, since so many people are native Chinese speakers and many more are learning it as a second language.
18 English has become the dominant language of science, with an estimated 80 percent to 90 percent of papers in scientific journals written in English, notes Scott Montgomery in a separate paper in the same issue of Science. That's up from about 60 percent in the 1980s, he observes.
19 "There is a distinct consciousness in many countries, both developed and developing, about this dominance of English. There is some evidence of resistance to it, a desire to change it," Montgomery said in a telephone interview.
MORE LANGUAGES ON THW WEB
20 For example, he said, in the early years of the Internet it was dominated by sites in English, but in recent years there has been a proliferation of non-English sites, especially Spanish, German, French, Japanese and others.
21 Nonetheless, English is strong as a second language, and teaching it has become a growth industry, said Montgomery, a Seattle-based geologist and energy consultant. Graddol noted, though that employers in parts of Asia are already looking beyond English. "In the next decade the new 'must learn' language is likely to be Mandarin."
22 "The world's language system, having evolved over centuries, has reached a point of crisis and is rapidly restructuring," Graddol says. In this process as many as 90 percent of the 6,000 or so languages spoken around the world may be doomed to extinction, he estimated.
23 Graddol does have words of consolation for those who struggle to master the intricacies of other languages.
24 "The expectation that someone should always aspire to native speaker competence when learning a foreign language is under challenge," he comments.
From: http://www.msnbc.msn.com/id/4387421/
False cognates are usual in the English language. Which of the sentences extracted from the text contain a false cognate (false friend)?
- Química | 3.6 Reações Orgânicas
Assinale a alternativa correta.