Предмет: Алгебра, автор: internet098

Розв'яжіть графічно систему рівнянь
Х+у=3
2х-у=3

Ответы

Автор ответа: Аноним
3

\displaystyle \left \{ {{x+y=3} \atop {2x-y=3}} \right. \\\\\left \{ {{y=3-x} \atop {2x-y=3}} \right. \\\\2x-(3-x)=3\\x=2\\y=3-2\\y=1\\(x,y)=(2,1)

Приложения:
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: lenaverza
On Tynwald Day the Manx parliament has a day off.

1) True
2) False
3) Not stated
4)
Задание 12 № 570
The Isle of Man
In the Irish Sea about 20 miles away from the UK you will find a beautiful island. This is the Isle of Man. The people of the island are called Manx and they speak the Manx language. The island occupies a mid-point in the Irish Sea and the British Isles – right between England, Ireland, Scotland and Wales.
The scenery of the Isle is varied. There are ranges of hills with green valleys between them, there are sandy beaches in the north which contrast with the rocky cliffs along the coasts. The island's only mountain is slightly over 600 metres high. An old legend says that from its top on clear days you can see six kingdoms: the island itself, Scotland, England, Ireland, Wales and Heaven.
The Isle of Man has the oldest parliament in the world. It is called the Tynwald and it has met regularly since 979. The Tynwald usually meets in the capital of the country. However, for one day every summer the Manx parliament
gathers in a small village to celebrate Tynwald Day. It is the only day of the year when parliament is held in the open air. On this day government officials read a summary of all the laws that have been passed during the year in both the English and the Manx languages. There is entertainment before and after the ceremony and it is a real community event. In addition to that, an open air market is organised and different concerts are held in the evening. At the conclusion, the Manx national anthem is played and there is a firework display.
Another thing that attracts tourists to the Isle of Man is its rich and unique culture. Any visitor to the island will be particularly fascinated by the legends, folklore and the ancient traditions that are still kept alive today. Most tourists are happy to participate in the folk programmes.
In Manx mythology, the island’s name comes from the name of a Celtic sea god. He ruled the kingdom and protected the land from invaders by covering the island with mist and thick fog. The island is also reputedly home to fairies who are very special. The Manx fairies are described as small and human-like. They wearred caps and green jackets and are naughty and wicked.
There's even a bridge called Fairy Bridge. Those who cross it are advised to say “hello fairies” in order to get good fortune. If the person doesn’t greet the fairies, the fairies will become angry with him and may play a nasty trick on him. Some people go further in trying to pay their respects to the ‘little people’. They do not just simply say hello, they also leave messages and gifts at the side of the road.
If you love reading about King Arthur and his knights, then a must-see place is Peel Castle. It was constructed in the 11th century by the Vikings and has a fascinating history. It is believed that Peel Castle was the location of Avalon – the legendary island where King Arthur’s sword was made and where King Arthur was taken after being wounded.
1 год назад
Предмет: Українська література, автор: ЯнаВасилівна
написати цитати Люби з твору "Гуси-Лебеді летять"
1 год назад
Предмет: Английский язык, автор: blugirl1
Сделайте 1( a,b) плиз
1 год назад
Предмет: Русский язык, автор: vika6692
Характеристика предложения:
1. Машины с капустой начали разгружать у рынка.
2. Увидев эту жуткую картину он, он сильно испугался.
3. Когда я вошёл в дом, то никого там не обнаружил.
Срооооочнооооо
7 лет назад
Предмет: Алгебра, автор: serebryansky020502
найдите при каких значениях x равна нулю производная функции f(x)=(x^4/4)-(x^(3)/3)-(6x^2)
7 лет назад