как вымерить площу прямоугольника 5 дм и 3 дм

1.Употребите модальные глаголы can, may, must, need там, где это необходимо. You...write the letter now. You...do it tomorrow.

Paula...speak Italian but she...not speak French.

He...forget to come to the conference. He is so absent-minded!

It's a fantastic film. You...see it.

Be happy You...not be sad.

2.Употребите местоимения much, many, a lot of там, где это необходимо.

Jim loves films. He goes to the cinema...

Linda thinks TV is boring. She doesn't watch TV...

This road is very dangerous. There are...accidents.

Quick We must hurry. We haven't got...time.

Do you drink...coffee?

Решите уравнение:

sin2x=cos(п/2-x)

точка движется прямолинейно с скоростью [tex]v(t)=sin^{5}tcost[/tex] . Найти закон движения точки , если s(0)=0