Счетчик банкнот пересчитывает 1800 купюр за 1,5 минуты. За сколько секунд этот же счетчик может пересчитать 300 купюр?

РЕШИТЕ ПОЖАЛУЙСТА

1) 0,89х-х2=0

2)1,2х2-0,3=0

3) 121-289х2=0

4)2х2+5х-12=0

5) 3х2-5х-2=0

6)6х2-17х+5=0

7)-5х2+х_6=0

8)х2-х+=0

9)х2+7,8х-1,6=0

10) х2-5,6х-2,4=0

11)х2+1/2х+1/18=0

12)х-=6

13)х+3деленная на х=-4

14) х-3=18деленная на х

15) 16х-8=-1деленная на х

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C какими из перечисленных веществ будет реагировать аминоуксусная кислота:

метиловый спирт,азотная кислота,гидроксид калия,пропионовая кислота.Подтвердить уравнением

Перевод,без переводчика,можно с решебника (англиский язык 10 класс,гроза,new millennium,unit 8?lessons 3-4,упражнение 5а) 3 When I came up to the biggest computer, I saw a thin, small man. "I'm Steve," he answered after I had asked hIm a couple of times what his name was. "I can't talk with you. I'm busy", he said. I thought he was working, and I apologised. But he was not working. He was chatting online with somebody - probably someone he didn't know - and, at the same tIme, he was playing a computer game - a war game. I was surprised. Why didn't Steve want to talk with me? 4 _ I tried to communicate with another computer geek, but not a word came out of his mouth, I touched his shoulder, but there was no reaction. I was getting upset. I put my hand in front of the monitor, and he started to shout, "Leave me alone'" 5 - I realised the people in that place were having a cup of coffee and a nice conversation with their machines. All of them were more interested in having a relationship with the computer. I felt lonely, I saw their bodies, but I couldn't feel theIr souls. That was because their souls didn't belong to them. They belonged to the "Net".