Ответ по предмету Математика: при каких натуральных значениях k дробь k-1/4 будет правельной?

Предмет: Математика, автор: ilgam22

Помогите решить.
- 4,5х-4,5х-х-х+х=-81
- 3,6х-3,6х-3,6х+3,6х=-72
4х-5х-5х=1,2×3(-10)
10х-4х-4х+2х=24×4×0,5

7 лет назад

Предмет: Математика, автор: Xertyuiopjvggcgg

Решите систему неравенств {2×( х-3)+2х<4 снизи х-8<6 х+3

1000 балов

7 лет назад

Предмет: Английский язык, автор: gulnaziglamova929

1. The total area of the UK is:
A) 244,100
B) 320,400
C) 560,600
D) 700
E) 100
2. Great Britain and Ireland are separated by:
A) The North Sea
B) The Irish Sea
C) The Atlantic Ocean
D) The English Channel
E) The Strait of Dover
3. The western coast of Great Britain is washed by:
A) the Atlantic Ocean, the Pacific Ocean, the North Sea, the English Channel
B) the Atlantic Ocean, the Strait of Gibraltar, the Irish Sea
C) the North Sea, the Strait of Dover, la Manche
D) the Thames, the Wash, the Suez Canal, Pas de Calais
E) the Atlantic Ocean and the Irish Sea.
4.… divide England from Scotland.
A) The Cheviot Hills & the river Tweed
B) The Cheviot Hills
C) The Cumbrian Mountains
D) The Southern Uplands
E) The Pennines
5. The British Isles consist of :
A) two large islands
B) three large islands
C) many islands
D) a great number of small islands
E) two small islands
6. The British Isles are separated from the European continent by
A) the Atlantic Ocean
B) the North Sea and the English Channel.
C) The Strait of Dover
D) The Gulf Stream
E) The Irish Sea
7. Northern Ireland occupies ... of the island of Ireland
A) one fifth
B) one sixth
C) one eighth
D) one third
E) one tenth
8.The population of the United Kingdom is over:
A) 25 mln people
B) 52 mln people
C) 55 mln people
D) 42 mln people
E) 80 mln people
9. The main nationalities are:
A) English, Scottish, Welsh
B) English, Scottish, Welsh and Irish.
C) Scottish, Welsh and Irish.
D) English
E) Welsh and Irish.
10. ... influence the climate of Great Britain.
A) The warm currents in the Atlantic Ocean
B) The warm currents in the Pacific Ocean
C) The warm currents in the Irish Sea
D) The warm currents in the North Sea
E) The Gulf Stream
11. ... reach their highest point in Ben Nevis.
A) The Highlands of Scotland
B) The Southern Uplands
C) The Pennines
D) The Cheviot Hills
E) Lowland Britain
12. Officially the flag of the United Kingdom of Great Britain & Northern Ireland is called ...
A) Union Jack
B) Union Andrew
C) Union Patrick
D) Act of Union
E) The Royal Crest
13. The Celts were
A) Picts
B) Scots
C) Britons
D) Iberians
E) All mentioned above
14.The Celts arrived in Britain about the year:
A) 500 BC.
B) 200 BC.
C) 450 BC.
D) 400 BC.
E) 550 BC
15.The Romans began their second conquest of Britain in :
A) 14 AD
B) 43 AD
C) 34 AD
D) 41 AD
E) 17 AD
16. The Normans invaded and conquered England in:
A) 1066
B) 1006
C) 1666
D) 1660
E) 1160
17. Julius Ceasar's expedition to the British Isles was in:
A) 1066
B) 55 BC
C) 40AD
D) 597
E) 1381
18. In … England built an establishment at Jamestown in North America:
A) 1067
B) 1076
C) 1607
D) 1231
E) 3214
19. The United Kingdom of Great Britain and Northern Ireland is situated:
A) on the British Isles
B) in the Irish sea
C) in the Atlantic ocean
D) in Asia
E) on the European continent
20. The British Isles are separated from the continent of Europe:
A) by the Irish sea, Atlantic ocean
B) by the English channel, the Strait of Dover, the North sea
C) by the English channel and the Irish sea
D) by the north sea and the Irish sea
E) by the Strait of Dover and the Irish sea
21. The British Isles consist of:
A) large number of islands
B) three large islands
C) two large islands- Great Britain and Ireland and a lot of small islands
D) four large islands
E) a lot of small islands
22. The territory of the United Kingdom historically divided into?
A) two
B) three
C) five
D) four
E) ten
23. The total area of the United Kingdom:
A) 244 square kilometres
B) 200 square kilometres
C) 144 square kilometres
D) 444 square kilometres
E) 246 square kilometres
24. The United Kingdom situated in:
A) the mild zone
B) the severe zone
C) the hot zone
D) the warm zone
E) the temperate zone
25. Fiords are especially numerous:
A) in Ireland
B) in England
C) in Great Britain
D) in the coasts of Scotland
E) in England and in Ireland
26. The nature of Great Britain is affected by:
A) by the sea
B) by the fiords
C) by the English channel
D) by the strait of Dover
E) by the Atlantic Ocean
27. The territory of Great Britain can be divided into?
A) two natural regions
B) three natural regions
C) four natural regions
D) six natural regions
E) ten natural regions
28. The general slope of the land in Great Britain is:
A) from the west to the east
B) from the east to the west
C) from the south
D) from north-west to south-east
E) from the south to the north
29. The mountains can be divided into:
A) the Highland of Scotland, The central Plain of Scotland, nearly the whole of Wales
B) the Highland of Ireland, the Lowlands of England, Highlands of Ireland
C) Lowlands of Wales, Lowlands of Scotland, Lowlands of England
D) Lowlands of Scotland, Lowlands of Wales, Lowlands of England
E) Lowlands of Scotland, Lowlands of England, Lowlands Scotland

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при каких натуральных значениях k дробь k-1/4 будет правельной?

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