4x-1=2(x+0.3) 5/6x+1 2/3=2x-3 пы.сы. второе уравнение, для тех, кто не понял, напишу словами. пять шестых икс плюс одна целая две трети равно два икс минус 3 ну, или так пять шестых x + одна целая две трети=два x минус три надеюсь на вашу : 3
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.
Это интересная задачка на пространственное воображение если сделать на кубе разметки разрезания то будет видно что кубики у которых окрашены 2 грани лежат точно по ребрам куба но при этом не находятся в углах тк там 3 закращенные грани не сложно понять что все число кубиков равно a^3 где a-число кубиков лежащих на 1 ребре тк 125=5^3 то a=5 тк мы не учитываем края то нам нужо взять с каждого ребра ровно 5-2=3 кубика надеюсь понятно всего у куба 12 ребер тогда всего таких кубиков 3*12=36 тогда искомая вероятность 36/125=0,288
4х-1=2х+0.6
4х-2х=1.6
2х=1.6
х=0.8
5\6х+1 2\3=2х-3
5\6х+5\3=2х-3
5\6х-12\6х=-5\3-9\3
-7\6х=-14\3 разделить на минус 1
7\6х=14\3
х=14\3:7\6=14\3*6\7=4
ответ:4