Периметр прямоугольника равен 46, а диагональ-17см. Найдите стороны прямоугольника.

решите неравенство

[tex]\frac{2}{x-2}<\frac{1}{x+1}\leq\frac{1}{2x}[/tex]

Раскройте скобки, употребляя глаголы в требующемся времени. И переведите. заранее спасибо.

4 The lesson (not yet to begin), and the children (to talk) loudly in the corridor.

5 I (to live) in St. Petersburg since 1991.

6.By the fifteenth of January the students (to pass) all the examinations.

7. The students (to write) the paper by dinner-time.

8. They (to sail) down the river for many hours before they (to come ) to the village.

9. I (not to be) to my home town for five years.

10. The rain (to stop) by the time we (to reach) home.

11. The message (to arrive) five minutes after he ( to leave) the house.

можно ли комнатный термометром измерять температуру воды и обьяснение

В Треугольнике ABC угол С равен 90 градусов СН-высота, АС=4. sin A корень из 7 деленное на 4. Найдите АН