Решите систему уравнений: 2х-у=18 2х+3у=2 - Znanija.Site

Решите систему уравнений:
2х-у=18
2х+3у=2
- Предмет:
  Алгебра
- Автор:
  julianyg19
- 5 лет назад

Ответы 1

$y = 2x - 18 \\ 2x + 3y = 2 \\ 2x + 3(2x - 18) = 2 \\ 2x + 6x - 54 = 2 \\ 8x = 56 \\ x = 7 \\ 2 \times 7 + 3y = 2 \\ 14 + 3y = 2 \\ 3y = - 12 \\ y = - 4$
- Автор:
  bellekyh7
- 5 лет назад
- 0
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Every mode of transport has its own specific document for transportation.For air transport it is the air waybill, referred to as the AWB, while for sea
transport it is the Bill of Lading shortened frequently to the B/L. For international
road freight, the consignment note completed by the hauler is the CMR note.
The Bill of Lading is one of the oldest documents used in international
trade. Bills of Lading are issued either by shipping lines or by freight forwarders
and also by the International Federation of Freight Forwarders Association
(FIATA).
All Bs/L are fairly similar in appearance, the only difference is the name
of the shipping line which is stated at the top. Details of the shipment are in the
body of the document with the space for signatures at the bottom. The reverse side
is filled with the detailed description of the conditions of carriage which become
important when something goes wrong.
The Bill of Lading fulfills three functions.
Its first function is to act as a receipt of goods, as it includes full details of
the number of packages and the description of the goods.
The B/L is also the contract of carriage between the shipper and the
shipping line.
The bill is completed after the ship has left the port, and only after that the
shipping line can complete the parts of the bill regarding the name of the vessel
and the sailing date.
The third function of the B/L is as a document of title. This means that
anyone who presents the B/L can take delivery of goods.
The consignment note is used for international road freight. It is
completed by the hauler.
The CMR contains the information about the load and the details of the
trailer and the carrier. The first copy of the CMR remains with the sender, the
second accompanies the goods and the third is retained by the carrier. Upon the
charge of the goods the consignee will be asked to sign the CMR.
The air waybill is used for all airfreight; it is completed either by the
airline or the airfreight forwarder who will establish the document.
The number in the top right-hand corner is unique and is used to identify
the goods at all stages of their journey as well as when they are collected by the
consignee, so it is important to inform a customer on the air waybill number as
soon as possible.
The air waybill is also used as an accounting document with charges
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There is one more specific export/import document which is called the
Single Administrative Document (SAD) that acts as a customs declaration. It is
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accompanies the goods from door to door; some parts are filled in by the exporter;
some by the freight forwarder at the time of export and other parts – by the freight
forwarder handling the import.
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