Предмет: Математика, автор: Аноним

Дз младшей сестры. У меня у самой уроки. Поэтому нет времени.

Приложения:

Ответы

Автор ответа: andrmahr

0

Ответ:

в одной коробке 31 во второй 49

Пошаговое объяснение:

x1+x2=80

x1=80-x2

x1=80- (x1+18)

x1=80-x1-18

x1 + x1 = 80-18

2x1=62

x1= 62/2

x1= 31

x2=31+18

x2=49

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Другие предметы, автор: вИОЛЕТТА1500

ответьте на вопрос что нам дороже всего?

2 года назад

Предмет: Английский язык, автор: ulalun

ДАМ 40 БАЛЛОВ КТО ПОМОЖЕТ ИСПРАВИТЬ В ТЕКСТЕ ОШИБКИ (если они есть)
Текст:

Top 10 professions.
With daily stress and fear. Where the first place is is not an executioner who
humanely presses the electric chair.

1)      Bus drivers
in Guatemala.

900 drivers were killed
in gang attacks in Guatemala, many drivers refused to work because of the lack
of police protection.

2)      Pilot.

Russia ranks first in the number of dead pilots. 800 people were lost in
10 years.

3)
Miner.

Profession miner always considered dangerous especially in China. In
2012 in a vault 1384 workers were lost.

4)
Private security guard.

The soldiers of the coalition forces left Iraq. They guard the order of
7000 private security guards have killed 121 people.

5)
Journalist.

39 journalists killed in Syria, according to official figures. This is a
record compared with Pakistan and Somalia.

6)
Sapper.

In its profession of mistakes doesn't happen though modern means of
protection can leave him the disabled person. Afghanistan and Iraq need such
people.

7)
Fisherman.

Fishery is Alaska the most dangerous profession in the world. During
performance of work there is a risk to fall overboard, because you have to
exert physical effort. Ship could easily capsize during a violent storm and
navigation errors.

8)      Woodcutter.

In the USA on 100 thousand woodcutters perishes 104. The operator of a
chainsaw can die of the tree which has fallen to it.

9)
Driver trucker.

In Hot Africa drivers besides breakages are trapped by danger of death.
These are wild animals. 3000 people were lost from their hands.

10)
Police.

As a result of long-term war between the authorities, in Mexico 1000
police officers were lost.

Some frankly kidnapped and killed.

2 года назад

Предмет: Другие предметы, автор: asem2002

Напишите доклад на тему витамин Е в школу завтра заранее спасибо!

2 года назад

Предмет: Геометрия, автор: Drekman

Помогите пожалуйста!!! В прямоугольной трапеции ABCD большая боковая сторона AB равна 25, а основания равны 2 и 26. Найдите площадь трапеции.

9 лет назад

Предмет: Математика, автор: Николас166

Вичесть.2 целых 4/5 - 8/25 СРОЧНО

9 лет назад