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вёдра
вёдра
03.12.2020 03:18 •  Математика

Вырази в милиметрах 8см, 5см,3 см, 2мм.

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Ответ:
фреска25
фреска25
03.12.2020
8см=80мм
5см=50мм
3см=30мм
2мм=2мм
4,7(36 оценок)
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Ответ:
dasha1975
dasha1975
03.12.2020
 I have a separate room of my own, which is nice. However, I would like to make some changes there. My current room is of light green colour but I’d like it to be orange. I like warm and welcoming colours. My mum promised to change the wallpapers this year, so I hope to have my dream room soon. Another thing I’d change is the shape and size of my wardrobe. I have a huge rectangular wardrobe of dark hazel colour. Instead, I’d like to have a smaller one with oval top and city landscapes on it. I’d like to have a bunk bed in my room. At the moment I’m sleeping on a huge sofa, which occupies half of the room’s space, whereas bunk beds are more comfortable and compact. Sometimes my friend Polina visits me and wants to stay overnight. With a bunk bed it would be much easier, as she could sleep on its top bunk. In the right corner I have a small study with a desk, a chair, a computer, a lamp and some book shelves. I wouldn’t like to change anything there as it’s a very cozy corner. I do my home-works and additional projects there. Speaking of a computer, I dream of a cute pink laptop. Mine is an old desktop computer which is often slow to react. So my dream room should contain a new laptop. My parents don’t want me to keep any pets in the flat. But in my dreams I wish I could keep a small turtle and a hamster in my room. Also, a large fish-tank with colourful fishes would be nice. When I have such a perfect room, I’ll invite friends over more often.
4,6(80 оценок)
Ответ:
cherru1
cherru1
03.12.2020

а)8 5/7+3,15+1 2/7+4,25=(8 5/7+1 2/7)+(3,15+4,25)=10+7,4=17,4

б)4,7+2/3+1 3/5+3,3=(4,7+3,3)+(2/3+1 3/5)=8+2 4/15=10 4/15

в)8 19/20+5,875+20 35/40=(8 19/20+20 35/40)+5,875=29  33/40+5,875=29 33/40+5 35/40=34 68/40=34 17/10=35,7

г)6,75+3 1/4-7 5/28=(3 1/4-7 5/28)+6,75= -3 13/14+6,75= -3 13/14+6 3/4=2 23/28

д)2,1+1 7/30-(4-2,9)=2,1+1 7/30-1,1=(2,1-1,1)+1 7/30=1+1 7/30=2 7/30

е)22-(4 5/7+8,91+1,09)=22-(4 5/7+10)=22-4 5/7-10=(22-10)-4 5/7=12-4 5/7=7 2/7

ж)76-4 7/25+8,28=(76+8,28)-4 7/25=84,28-4 7/25=84 7/25-4 7/25=80

з)2 5/6-1,6-2/3=(2 5/6-2/3)-1,6=2 1/6-1,6=17/30 

4,5(15 оценок)
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