He does his lessons.He is doing his lessons.He did his lessons.He was doing his lessons
My friend`s name is Kolya. he is 14 years old. he is very tall, slim, he has brown hair and blue eyes. Kolya is very good pupil, because he likes to learn something new and he is very smart. We like to visit different places, especially theaters and galleries.
Ответ: обе машины приедут одновременно за 4 часа.
Объяснение:
320:80=4(ч.)
280:70=4(ч.)
1. We arrived at the cinema at 6.15 p.m., but the film started at 6.00 p.m.
When we arrived at the cinema, but the film had started.
2. I didn't see my sister last night. She was in bed when I arrived home.
I arrived after she had gone to bed.
Пусть 1 часть-х,тогда 2ч-2х,3ч-3х,4ч-4х
всего в периметре-137,7 дм,то
2х+3х+4х=137,7
9х=137,7
х=137,7:9=15,3-1 часть
1 сторона=2ч=15,3х2=30,6
2-я =15,3х3=45,9 дм
3-я=15,3х4=61,2 дм