На столе лежала пачка тетрадей. Сначала взяли 30% ,а потом 75% оставшихся тетрадей. Осталось 14 тетрадей.Сколько тетрадей было в пачке первоначально?

Решите неравенство:

(4.2+2x)/(3)>1.5x-1.1

Нужно подробное решение! 

ученик записал в тетради произвольное двузначное число. какова вероятность того. что сумма цифр этого числа окажется равной

Один поезд проходит расстояние между станциями за 26 минут ,а другой за 39 минут . Через какое время они встретятся,если выедут одновременно навстречу друг другу

Перевести на русский язык.......

Rosy:Tell me everything,Robin. Were is my brother?

Robin:Well, it"s a long story. In 1559,I lived in Edinburgh and my father was one of the Scottish patriots. At what time, Scotland was independent from England, but there was no peace in our country. The English attecked us all the time. Our organization believed that the Stone of Destiny to Scotland. But it  wasn"t easy. The Stone was in London and the way to London was long and dangerous. The English knew about our organization, and there ready to cath and kill any of our members. Then we thought  aboud time tunnels.Only the greatest  wizard knew aboud them.These tunnels took peopel to the past or the future.

We had a plan. Somebody had to use the tunnel and get  to the London of  the future. They had to take the Stone From Westminster Abbey. Then the Stone could bring  this person back. There was only  one problem with our plan: we needed relatives in the London of the future, but we couldn"t find anybody.

Rosy:That"s interesting. Whats for?

Robin:When you travel in time you take samebode"s  place there.This means that somebody  takes your place in your own time.This person must be your  age and must  also be your  reliteve. That was difficuld. We read all our magic books and finally we found your family in the future.