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Дан четырёхугольник,сумма диагоналей которого равна 24 СМ.Найдите периметр четырёхугольника с вершинами в серединах сторон данного.
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Предмет:
Геометрия -
Автор:
angelicasoto - 6 лет назад
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Ответы 3
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ПОДРОБНО
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Автор:
jolie7 - 6 лет назад
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0
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ПОЖАЛУЙСТА
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Автор:
chubbsqnoy - 6 лет назад
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0
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Использовано определение и свойство средней линии треугольника
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Автор:
fortunato - 6 лет назад
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0
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Еще вопросы
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ANSWER THE QUESTIONS:
1.What's the cause of grounding of the Saint Malo?
2.What was the scope of damage?
3.What height did passengers have to jump into liferafts at?
4.Who met the claims of passengers?
5.What factors were taken into account for the compensation?
6.Was the landing into the liferafts safe?
7. What did passengers criticize the ship authority for?
Catamaran Grounding-Error Of Navigation
An error of navigation appears to have been the cause of serious damage to the French catamaran ferry Saint Malo.
Preliminary investigations have largely confirmed suggestions that the vessel, which has an eight foot long gash in her portside hull, scraped rock rather than hit logs or other floating objects at high speed.
Eyewitnesses suggested the catamaran, operated by French company Chanmland, was damaged after taking a short-cut through a difficult channel near Corbiere Lighthouse while on passage from Jersey to Sark.
The master of another Chanmland ferry, captain Michel Leroy, however, said the Saint Malo had been following a normal route when she was holed a mile offshore.
About 30 passengers are reported to have sustained fractures after jumping about 15 ft from the listing catamaran into inflatable liferafts, one passenger suffered a heart attack and others sustained less serious injuries.
Passengers criticized safety procedures as inadequate with no lifesaving demonstration before departure, no public evacuation order and claimed that alarms were not sounded until 10 minutes after the accident.
Passengers reported smelling oil shortly after the incident.
The liabilities of the Saint Malo are entered in the West of England Ship Owners Mutual Insurance Association which wiJl be responsible for meeting injury claims, any pollution and the cost of representing the shipowner at the inquiries that will result.
The official investigations will be conducted by both the French authorities and the UK's Marine Accident Investigation Branch.
Neither France nor the UK is a signatory to the Athens Convention that covers passenger liabilities, so compensation will be determined by ticket conditions, the laws of France and those applicable to the Channel Islands plus possibly the nationality of the passengers.-
Предмет:
Английский язык -
Автор:
missyuuez - 6 лет назад
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Ответов:
1 -
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Здравствуйте , помогите пожалуйста сделать данное задание по английскому языку, умоляю вас пожалуйста и заранее я вам очень сильно благодарен!!! На завтра
очень
нужно и надо!!!
Have you ever wondered how birds find their way when flying?
Read and find out.
Choose the best answer a,b.c , or d for the question 1-5.
The pigeon is famous for always being able to find its way home.In fact racing pigeons is a popular sport in some countries.Owners take their birds hundreds of miles away and then release them.The bird that gets back home in the fistest time is the winner.Until now it has been thought that the birds have their own built-in system of navigation and use the position of the sun and starts to quide them.
However a ten-year study has proved to scientists that pigeons travel rather like drivers do and follow the major roads.The birds that were monitored in the study were constantly flying along motorways and even turning left and right at main junctions , while ignoring small winding roads.
A professor of zoology at Oxford University and a racing pigeon expert agree.The professor says that birds use their traditional forms of navigation first but when they fly the same route again they remember the roads and follow them.
A group of birds was released as a test and all flew along the same major road and turned right at the first junction.The pigeon racer describes this research as absolutely accurate.Every Saturday , he , says you can see flocks of pigeons flying along the motorways.
1.Pigeon racing consists of:
a) owners see how far each pigeon can fly.
b) scientific research into the way pigeons fly.
c) pigeons are released on the motorways.
d) owners see which pigeon gets home first.
2.Pigeons` `built-in system of navigation` refers to:
a) their natural instinct for finding their way.
b) their natural ability to follow major roads.
c) the fact that they fly as a large group.
d) special equipment the researches have used to track them.
3.The roads pigeons followed were:
a) all the roads going in the right direction.
b) only motorways.
c) the important direct routes.
d) the smaller less busy country roads.
4.A junction is:
a) a sharp bent in the road.
b) where a motorway and a road meet.
c) a place where one road crosses another.
d) a place where you can buy petrol.
5.Pigeons are expecially seen on Sarurdays because:
a) that`s the day the roads are busiest.
b) that`s the day the research takes place.
c) that`s the day pigeon racing takes place.
d) that`s the day the motorways are open.
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Предмет:
Английский язык -
Автор:
porcherspb - 6 лет назад
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Ответов:
1 -
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- що таке кругообіг води в природі як і завдяки чому він відбувається
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доказать тождество (sin a +cos a)^2-1
--------------------------- =
ctg a-sin a*cos a-
Предмет:
Алгебра -
Автор:
kymanie3uq - 6 лет назад
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Ответов:
1 -
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