на лыжных соревнованиях школьники бежали эстафету по 3 человека на дистанции 2 000 м. первый и второй участники пробежали вместе 1 000 м. а второй и третий - 1 400 м. сколько метров пробежал каждый участник?

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Goverment regulations limit what a company may do.For example, some countries demand that the company files a plan indicating what it-is going to produce , how many local workers it is going to hire and how much it will pay the workers.This plan must also fit into the goverment economic master plan.If the country changes its master plan, the foreign firm must change its plans, too.

Преобразуйте следующие предложения в Past Simple. 1. Many people have an opportunity to use computers. 2.There is no doubt that computers solve problems very quickly. 3. Instructions direct the operation of a computer. 4. Computers bring with them both economic and social changes. 5. Computing embraces not only arithmetics, but also computer literacy. 6. It is well known that computers prepare laboratory tests. 7. Those persons are computer literate and think of buying a new computer. 8. They receive a subscription magazine once a month. 9. My mother is ill and visits her doctor every other day. 10. Experts know much about how to prepare programs.

под действием силы 320 Н пружина амортизатора сжалась на 9 мм. на сколько миллиметров сожмется пружина при нагрузке 1,60 кН
(и я не знаю что там за пункты такие) 

упростите выражение: корень из 3 умножить на (корень из 12 минус 2 корней из 27)=