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Решите неравенство
Решите неравенство:
1) х² + 5х - 6 > 0
2) 2х - х² ≤ 0
1) -х² - 2х + 3 > 0
2) х² ≤ 25
1) 9х² - 6х + 1 > 0
2) 3х² - х + 2 ≤ 0
3) 7 ≥ х²
Ответы 1
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1)x*(x+6)(x+6)>0(x+6)(x-1)>0x+6>0x-1>0x+6<0x-1<0x>-6x>1x<-6x<1xє(1,+)xє(-,-6)
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Автор:
speed - 6 лет назад
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0
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как произносится срочно весь текст весь даю 20 балов как произносится по английский к приверу юэсей вот так
The USA is one of the largest countries in the world. It is situated in the central part of the North American continent. The area of the USA is over nine million square kilometres. It is washed by the Pacific Ocean and by the Atlantic Ocean. The most northern part of the USA is Alaska,, the largest state, separated from the rest of the country by Canada.
The population of the United States is nearly 250 million people, most of the people live in towns. People of different nationalities live in the USA.
The official language of the country is English. The capital of the country is Washington. It was named in honour of the first President, George Washington.
As the USA is a large country, the climate is different in different regions. Foi example, the Pacific coast is a region of mild winters and warm, dry summers, but the eastern continental region is watered with rainfall. The region arounc the Great Lakes has changeable weather.
There are many mountains in the USA For example, the highest peaks of the Cordilliers in the USA are 6,193 and 4,418 metres.
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The USA produces more than 52 per cent of the world's corn, wheat, cotton, tobacco.
There are many big cities in the coun try. They are Washington (the capital of the country). New York (the city of contrasts, financial and business centre of the USA), Boston (there are many colleges and universities in it), Chicago (one of the biggest industrial cities in the USA), San Francisco, Los Angeles, Philadelphia, Detroit (one of the biggest centres of the automobile industry).
The USA has an Academy of Sciences. There are many scientific institutions, museums, libraries, theatres and other interesting places in the country.
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