Предмет: Алгебра, автор: hfbdhdu6774

Автомобиль проехал 152,6 км за 2,8 ч. Сколько км
он проедет за 4,2 чс той же скоростью?

Надоили 150 литров молока. 80% молока
отправили в детский сад, а остальное – в больницу.
Сколько литров молока отправили в больницу?

Масса 8 одинаковых приборов равна 27 кг.
Найдите массу 12 таких приборов.

|Решите уравнение: 11х + 3 = 5х + 21.

В сосуд, содержащий 9 литров 13-процентного вод-
ного раствора некоторого вещества, добавили
4 литра воды. Сколько процентов составляет кон-
центрация получившегося раствора?​

Ответы

Автор ответа: ЯгодкаЯлесная
1

Ответ:

фоточка тебе в помощь;)

Приложения:

hfbdhdu6774: а ещё 2
hfbdhdu6774: лучший
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текст :
Environmental protection is the main problem facing humanity nowadays. The
image of a sick planet has become firmly established in the public mind lately. Ten
years ago the word 'ecology' hardly meant anything for the majority of people, but
today we can't help bearing it in our minds. It has happened because of the growing
effect of the rapid industrial development of the natural world which has negative
features of its own. As a matter of fact the state of environment has greatly worsened
of late. There is no doubt that soil, water and air are contaminated with toxic wastes.
Over the past few years we have been constantly speaking about ozone holes,
droughts, high level of radiation, about food contaminated with chemicals. Scientists
in many countries are very much concerned about drastic changes in weather
patterns. The worst drought, the mildest winter and the most devastating hurricanes
have become typical in those parts of the world where they used to be a rare
occurrence. Weather patterns have been changing recently due to the global
warming-up process and its major reason — the greenhouse effect. The greenhouse
effect is created by carbon dioxide emissions, released by industrial facilities and a
constantly increasing number of cars. Thus it is of vital importance that the world
should start cutting down the release of gases that contribute to the greenhouse
effect. What is the reason for people getting so much worried about the state of
environment? The answer to this question is fairly simple. The thing is the
deterioration of the environment is telling heavily on people. They are paying for
this with their health. And it is obvious what all people need is a healthy
environment. To solve this burning problem it is necessary for people to combine
efforts, to raise safety standards at all industrial facilities, to adequately process byproducts of industry, to set up an international space laboratory to monitor the state
of environment and set up an international centre for emergency environmental
assistance. All these measures will help us in solving these important problems and
prevent us from dangerous illnesses and diseases.