Вычислить площадь фигуры, ограниченной линиями: xy=4, x=1, 4y=x

Из городов А и B, расстояние между которыми равно 440км, навстречу друг другу одновременно выехали два автомобиля и встретились через 4 часа на расстоянии 260км от города B. Найти скорость автомобиля, выехавшего из города А. ответ в км/ч.

описание картины ( портрет И С Тургенева картина художника И Е Репина) описать глаза нос губы волосы характер одежда и так далее ПОМОГИТЕ ПОЖАЛУЙСТА

по статистике на 1000 машин 20 имеют брак.Найдите,какой % из общего кол-ва машин составляют бракованные.

Упр.290 Раскройте скобки,употребляя глаголы в Passive Voice. 1.The rule explained by the teacher at the last lesson (to understand) by all of us. 2.The poem was so beautiful that it (to learn) by everybody. 3.I hope the invitation (to accept) by everybody. 4.The letter (to post) in half an hour. 5.It seems to me that music (to hear) from the next room. 6.At the last competition the first prize (to win) by our team. 7.The question (to settle) as soon as they arrived. 8.Your report must (to divide) into two chapters. 9.Soon he (to spend ) to a sanatorium. 10.The book (to discuss) at the next conference. 11.The composition must (to hand) in on Wednesday. 12.Yesterday he (to tell) to prepare a speech. 13.The article (to publish) last week, if I am not mistaken. 14.The lecture (to attend) by all of us. 15. A taxi (to call) fifteen minutes ago, so we are expecting it any monument. 16.The young man (to introduce) to me only a couple of hours ago, but it seems to me that I've known him for years.
Передайте следующие предложения в Passive Voice. 5)You must do three of these exercises tomorrow. 6)You can find the book you need in any library. 7)We must send these letters at once. 8)I can easily forgive this mistake. 9)You can find such berries everywhere. 10)You must do this work very carefully. 11)The doctor says they must take her to hospital. 12)You can do the work in three days. 13)The students must return all the library books before each summer vacation. 14)Monkeys can climb even the tallest trees.