Đỗ Hoàn
Giới thiệu về bản thân
M=2^2+2^2+2^3+...+2^2022
=>2M=2^3+2^3+2^4+...+2^2022+2^2023
=>2M-M=2^2023+2^2022+...+2^4+2^3+2^3-2^2022-...-2^3-2^2-2^2
=>M=2^2023+2^3-2^2-2^2
=>M=2^2023
75 km gấp 150 km số lần là: 75 : 150 = \(\dfrac{1}{2}\) (lần)
Ô tô đó đi 75 km thì tiêu thụ: 30 x \(\dfrac{1}{2}\) = 15 (l)
Đ/s: 15 lít xăng
II. Find and correct a mistake in each sentence (10 points)
1. I went out with a friend of me yesterday.
2. He seems to be capable in looking after himself.
3. This book is quite worth to read.
4. My father's car is the same color like my uncle's car.
5. They haven't seen each other since September when they have met at Mary's
6. Nam looked very angrily because his friends said no words.
7. Because his argument was so confused, few people understood it.
Here are the corrected sentences:
1. I went out with a friend of mine yesterday.
2. He seems to be capable of looking after himself.
3. This book is quite worth reading.
4. My father's car is the same color as my uncle's car.
5. They haven't seen each other since September when they met at Mary's.
6. Nam looked very angry because his friends said no words.
7. Because his argument was so confused, few people understood it.
Đó là ở bản đồ
1234×1256 =1549904
thành phần của không khí là:
Khí Nitơ (N₂) :chiếm 78%
Khí Oxi (O₂): chiếm 21%
Các khí khác: khí cacbonic (CO₂), hơi nước, khí hiếm (neon, argon, helium,...) và một số chất ô nhiễm khác chiếm 1%
Khí Nitơ (N₂)
Khí Oxi (O₂)
Các khí khác: khí cacbonic (CO₂), hơi nước, khí hiếm (neon, argon, helium,...) và một số chất ô nhiễm khác.