Найдите решение системы уравнений:(x+y=14,(х – у = 7,|x - у = 8;|x+y= 23;1)х+у= 32,|x - y = 14; - №32304626

Найдите решение системы уравнений:
(x+y=14,
(х – у = 7,
|x - у = 8;
|x+y= 23;
1)
х+у= 32,
|x - y = 14;
- Предмет:
  Математика
- Автор:
  mckayla
- 5 лет назад

Ответы 1

1)2х=21
х=10,5
у=3,5
2|2х=31
х=15,5
у=7,5
3)2х=46
х=23
у=9
- Автор:
  ashesbaker
- 5 лет назад
- 0
Добавить свой ответ

Еще вопросы

ПОМОГИТЕ РЕШИТЬ ЗАДАЧУ ПО ХИМИИ!!!

При взаимодействии 32,1 г бромэтена избытком спиртового раствора гидроксида калия получен газ, из которого синтезировали 0,975 г бензола. Вычислите выходы (%) обеих реакций, если известно, что выход во второй реакции в два раза меньше, чем в первой.
- Предмет:
  Химия
- Автор:
  frankie98
- 5 лет назад
- Ответов:
  
  2
- Смотреть
1. Из перечня формул выпишите отдельно формулы оксидов, оснований, кислот и солей и дайте им названия:

К2О Аl(OH)3 HNO3 HCl BaO BaSO4 AlPO4CO2 H3PО4 Fe(OH)2 Ag Cl NaNO3 Al2O3

2. Дана схема превращений. Составьте уравнения реакций.

Cu  CuO  CuCl2 → Cu(OH)2 Укажите тип реакций.

3. С какими из перечисленных веществ будет реагировать соляная кислота: HCl, CaO, CO2, H2O, Mg, Ba(OH)2. Напишите уравнения осуществимых реакций.

4. Напишите формулы следующих солей: сульфата калия, нитрата бария, карбоната натрия, фосфата кальция, сульфата цинка, сульфида железа (II), хлорида меди (II), силиката калия, сульфита натрия, бромида алюминия, иодида калия, гидрокарбоната магния, дигидрофосфата калия.
- Предмет:
  Химия
- Автор:
  velascoxc8x
- 5 лет назад
- Ответов:
  
  1
- Смотреть
Перерешите пожалуйста текст в past tense
The story begins in the Shire, where the hobbit Frodo Baggins inherits the Ring from Bilbo Baggins, his cousin[c] and guardian. Neither hobbit is aware of the Ring's nature, but Gandalf the Grey, a wizard and an old friend of Bilbo, suspects it to be Sauron's Ring. Seventeen years later, after Gandalf confirms his guess, he tells Frodo the history of the Ring and counsels him to take it away from the Shire. Frodo sets out, accompanied by his gardener, servant and friend, Samwise "Sam" Gamgee, and two cousins, Meriadoc "Merry" Brandybuck and Peregrin "Pippin" Took. They are nearly caught by the Black Riders, but shake off their pursuers by cutting through the Old Forest. There they are aided by Tom Bombadil, a strange and merry fellow who lives with his wife Goldberry in the forest.
The hobbits reach the town of Bree, where they encounter a Ranger named Strider, whom Gandalf had mentioned in a letter. Strider persuades the hobbits to take him on as their guide and protector. Together, they leave Bree after another close escape from the Black Riders. On the hill of Weathertop, they are again attacked by the Black Riders, who wound Frodo with a cursed blade. Strider fights them off and leads the hobbits towards the Elven refuge of Rivendell. Frodo falls deathly ill from the wound. The Black Riders nearly capture him at the Ford of Bruinen, but flood waters summoned by Elrond, master of Rivendell, rise up and overwhelm them.
Frodo recovers in Rivendell under Elrond's care. The Council of Elrond discusses the history of Sauron and the Ring. Strider is revealed to be Aragorn, Isildur's heir. Gandalf reports that Saruman has betrayed them and is now working to become a power in his own right. The Council decides that the Ring must be destroyed, but that can only be done by sending it to the Fire of Mount Doom in Mordor, where it was forged. Frodo takes this task upon himself. Elrond, with the advice of Gandalf, chooses companions for him. The Company of the Ring are nine in number: Frodo, Sam, Merry, Pippin, Aragorn, Gandalf, Gimli the Dwarf, Legolas the Elf, and the Man Boromir, son of Denethor, the Ruling Steward of the land of Gondor.
After a failed attempt to cross the Misty Mountains through the Redhorn Pass, the Company are forced to take a perilous path through the Mines of Moria. They are attacked by the Watcher in the Water before the doors of Moria. Inside Moria, they learn of the fate of Balin and his colony of Dwarves. After surviving an attack, they are pursued by Orcs and by an ancient demon called a Balrog. Gandalf faces the Balrog, and both of them fall into the abyss. The others escape and find refuge in the Elven forest of Lothlórien, where they are counselled by its rulers, Galadriel and Celeborn.
With boats and gifts from Galadriel, the Company travel down the River Anduin to the hill of Amon Hen. There, Boromir tries to take the Ring from Frodo, but Frodo puts it on and disappears. Frodo chooses to go alone to Mordor, but Sam guesses what he intends and goes with him.
- Предмет:
  Английский язык
- Автор:
  anne38
- 5 лет назад
- Ответов:
  
  1
- Смотреть
Помогите срочно пожалуйста
1. How you ( to get ) to work as a rule?- I usually (to go ) by bus.
2. She ( to get up ) early tomorrow morning.
3. It ( to be ) a fine day today. There ( to be ) some clouds in the sky, but the sun ( to shine )
4. She is going to have dinner. She just ( to wash ) her hands.
5. A lot of rain ( to fall ) last night.
- Предмет:
  Английский язык
- Автор:
  hugowheeler
- 5 лет назад
- Ответов:
  
  1
- Смотреть

How much to ban the user?

1 hour 1 day 100 years