suy ra =>

BC=6 cm

Tam giác \(A B C\) là tam giác cân (cân tại \(B\))

a, thể tích hình lập phương là

V= 1000 ( cm3 )

b, thể tích hình hộp chữ nhật là

V=1000+400=1400 cm3

suy ra =>

a) \(\angle C < \angle B < \angle A\)
b) Tam giác \(B C D\) cân tại \(C\)
c) \(D I\) cắt \(B C\) tại trung điểm của \(B C\)

đa thức có bậc là 6

x=10

,y=22

1. When I am a road user, I should not use my phone while driving, run red lights, or drive too fast because it is dangerous.
2. I prefer to watch films at home because it is more comfortable and cheaper than going to the cinema.
3. I think celebrating traditional festivals is good because it helps us remember our culture and brings people together.
4. Renewable energy sources are important because they are clean, do not pollute the environment, and will not run out.

The picture shows four different scenes about daily life, technology, and culture.

In the first picture, there are two students sitting in a library. They are studying together. The boy looks a bit confused, while the girl is explaining something and holding some papers. There are many books on the shelves behind them, so it seems like a quiet place for learning.

In the second picture, a woman is charging an electric car at a charging station. The car is white, and it looks modern. This shows the use of clean and environmentally friendly transportation.

In the third picture, there is a traditional festival. A group of people are wearing colorful traditional clothes and performing on a stage. The sign says “Hội Lim,” which is a famous festival in Vietnam. They are singing and playing musical instruments.

In the last picture, a worker is installing solar panels on a roof. He is wearing safety clothes and working carefully. This shows the use of solar energy, which is a renewable energy source.

Overall, the pictures show education, modern technology, traditional culture, and clean energy in our lives.

1 My name is Hoang Hai Nam

2 walk to school because it is about 1 kilometer from my house

3 I like action and comedy films the most.

4 I joined the Mid-Autumn Festival.

5 I use electricity and solar energy at home.

1. Despite having a low budget, the film was still a success.
2. You must not throw trash out of your car window in traffic.
3. The food at this stall was less delicious than the food at that one.
4. We do not have enough notebooks for the students.

1. I think we will travel by hyperloop in the future.
2. Traffic in big cities is often worse than in small towns.
3. Are there usually special activities for children at festivals?