Предмет: Алгебра, автор: bassbrata

Розкрити дужки і спростити: 11+(7а – 11)

варіанти відповідей

7а - 22


-7а


22 + 7а


7а
дам 50 балов срочна

Ответы

Автор ответа: Аноним
3

Ответ:

7a

Объяснение:

11 + (7a - 11) = 11 + 7a - 11 = 7a

Автор ответа: Пеппер
1

Ответ:

7а

Объяснение:

11+(7а – 11)=11+7а-11=7а

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Биология, автор: NastiaKristi
Где хранится продукты жизнедеятельности растительной клетки?
2 года назад
Предмет: Математика, автор: lyda29082009
у продавца было 40 красных шаров.одна пятая часть этого количества -синие шары,а желтых было в 9 раз больше,чем синих.Сколько всего шаров было у продавца?
2 года назад
Предмет: Математика, автор: dochnochi
две машины, движутся друг другу, приблизились за 1ч на 1/3 расстояния между двумя городами. Первая машина проехала 1/8 этого расстояния. Какую часть всего расстояния проехала вторая машина?
2 года назад
Предмет: Химия, автор: alaeldeinjamal
3. Порядковый элемента 49. Какой заряд ядра и сколько номер протонов, нейтронов и электронов в атоме? Назовите элемент.
8 лет назад
Предмет: Английский язык, автор: baiymbetj320
Disposal, Effects, Pollutants, Spiecies, Acceleration, Explosions, Threatens, Deteriorates, Vegetation, Non-biodegradable, , Pesticides, Pollution, Thoughtless, Extinction, Depletion, Purification, Hazardous,Insecticides, Undermines, Environment, the World Health Organization, Fertilizers, Ozone screen, Distruction.
Fill in necessary words in these sentences and translate them into Russian:

1. Man cannot interfere in nature and try to change it without taking into account possible negative ____ of his economic activity.
2. Many ecologists consider that the disappearance of particular living ____
constitutes the main ecological and social problem of the day.
3. The problem of environmental ____ is the problem of turning man’s ____ and
uncontrolled impact on nature into purposeful and planned interaction with the latter.
4. The world’s famous biologists warn about the ____ of animals and plants on a scale much greater than their both natural and man-caused extinction during the preceding millions of years.
5. If this massive biological ____ of the Earth’s resources goes on uncontrolled for several decades to come, the world____ will change irreversibly.
6. The____ and rational ____ of domestic and industrial wastes and conservation of nature are a matter of general state policy in many countries.
7. ____ coming from industrial centers in Eastern Europe affect forests , rivers, ponds and lakes there.
8. Where the trees have been cut down there are also local changes in the microclimate, in the ____ , and in the fauna.
9. More complicated chemical processing of raw materials yields new types of waste products that are ____ and ____ .
10. Our planet is a balanced system that can be easily damaged by negative anthropogenic influence which ____ to disrupt nature’s basic cycles and ____ the self-regenerating capacities of biosphere and its individual components.
11. According to ___ the pollution of the environment through chemical, physical and biological agents leads to pathological changes in heredity, ____ vital activities and reproductive functions of individuals and causes their genetic degeneration.
12. The usage of ___, ___ and ___ contaminate agricultural lands and water bodies.
13. Certain counter measures against the depletion of ___ can stop the ___ of global warming.
14. Deliberate ___ of ecosystems was practiced by the USA during its aggression in Vietnam.
15. During nuclear ___ a large amount of nitrogen oxides will be released into the atmosphere.
8 лет назад