Vạn sự như ý

Tỷ sự như mơ

Làm việc như thơ

Đời vui như nhạc

Coi tiền như rác

Coi bạc như rơm

Chung thủy với cơm

Sắc son với phở.

a) \(\left|\frac{1}{2}+x\right|+\left|x+y+z\right|+\left|\frac{1}{3}+y\right|=0\)

=> \(\left|\frac{1}{2}+x\right|=\left|x+y+z\right|=\left|\frac{1}{3}+y\right|=0\)

1/2 + x = 0 => x = -1/2

1/3 + y = 0 => y = -1/3

-1/2 + -1/3 + z = 0 

=> z = 5/6

Ta có: OP+OQ=PQ

2cm+OQ=5cm

=> OQ = 5cm - 2cm

=> OQ = 3cm

Mà 2cm < 3cm

Nên OP < OQ

mk tặng bn 2 bài lun

1. 2.

Năm mới tết đến Vạn sự như ý

Rước hên vào nhà Tỷ sự như mơ

Quà cáp bao la Làm việc như thơ

Một nhà lo đủ Đời vui như nhạc

Vàng bạc đầy tủ Coi tiền như rác

Gia chủ phát tài Coi bạc như rơm

Già trẻ gái trai Chung thủy với cơm

Xum vầy hạnh phúc. Sắc son với phở.

giời ạ tự nhiên đăng nhg tấm ảnh này lên làm gì làm tui bùn quá vì nhớ lại ngày Valentine cô đơn

Everybody likes to watch TV and everybody has a favourite TV programme. I want to tell you about my favourite TV programme. I like to watch TV programme "Week of sports" very much, because I like sport. My favourite kind of sports is HOCKEY! I also like tennis and football. In this programme it is told about hockey, tennis. footbal and other kind of sports. That`s why I like it very much. It is told about all events of sports. "Week of sports" is very interesting and faseinating. I recommend to watch it.
I have told you about my favourite programme. Now I want to know about your favourite TV programme. What TV programme do you like? Why do you like to watch it?

My Favourite Sport Swimming

Swimming has been my favourite sport since I was very small. I learnt to swim when I was just 5 years old. Swimming is a very popular sport; furthermore, it provides individuals with several physical and mental benefits.+

There are some reasons why swimming is popular. Firstly, swimming is a sport for all age groups; besides, it is a lifetime activity. People can learn to swim as young as 4 or 5 years old or as old as 60 or 70. All it takes is the right instruction and desire to get in the pool. Secondly, swimming is cheap. You don't have to spend much money on it. All you need is just a swimsuit that makes you feel comfortable and a goggle that keeps water from your eyes. Even though you have to buy an admission ticket, it is not so expensive. Anyone can afford to go to swim. Finally, swimming is one of the most popular sports in the world.

Besides its popularity, swimming is a good activity that provides individuals with several physical benefits. First of all, swimming is a movement through water using one's legs and arms that provides an all body workout. As all of your muscles are used during swimming, it is an excellent form of exercise. Moreover, swimming can also be very beneficial to your heart and lungs. After a few laps, swimming can help you cool-down, move blood through your muscles to help them recover. Swimming builds up muscle strength , so your body is kept in perfect shape.

In addition to its physical benefits, swimming is also an effective way to relax. Swim with a very low effort, let your mind wander, focus on nothing but the rhythm of your stroke. This form of meditation can help you gain a feeling of well-being. Furthermore, swimming is a wonderful recreational activity for you and your family. Swimming gives you a chance to be with your family or with some friends at the pool, or just to dip yourself in cool water. Spending hours at the pool on hot summer days is always my favourite pastime.

In conclusion, swimming is not only popular, but it is also one of the best all body workout a person can do. Besides its physical benefits, swimming is also a great recreational sport giving you peace of mind to continue with your day. Swimming has numerous advantages over other exercises and if done consistently will keep you in shape for the long period of time.

A game is an activity involving one or more players. Games are played primarily for entertainment or enjoyment, but may also serve as exercise. Everyone in this world has their own favorite games, so do I. My favorite game is football. I often play this with my friend in the evening. I like this game because it is exciting and challenging.

Football is a team sport played between two teams of eleven players each. It is a ball game played on a rectangular grass field with a goal at each end. The objective of the game is to score by maneuvering the ball into the opposing goal. The winner is the team which has scored most goals at the end of the match.
Football is played at a professional level all over the world, and millions of people regularly go to football stadium to follow their favorite team, whilst millions more avidly watch the game on television. A very large number of people also play football at an amateur level. In many parts of the world football evokes great passions and plays an important role in the life of individual fans, local communities, and even nations; it is therefore often claimed to be the most popular sport in the world.
There are many worldwide international competition of football. One of the major international competitions in football is the World Cup organized by Fédération Internationale de Football Association. Over 190 national teams compete in qualifying tournaments within the scope of continental confederations for a place in the finals. The finals tournament, which is held every four years, now involves 32 national teams competing. The next World Cup takes place in Germany 2006.
The star I admired most in football is Edson Arantes do Nascimento, nicknamed Pelé, is a former Brazilian football player and thought by many to be the finest player of all time. Often considered the complete attacking player, he was completely two-footed, a prolific finisher, exceptional at dribbling and passing, and was a remarkably good tackler for a forward. He was also famed for his speed and strength on the ball. Since his full retirement he has served as an ambassador for the sport.
There is many reason football is my favorite game. I wish to become a professional football player. I learnt teambuilding, discipline as well as teamwork through playing football

Tính độ dài đoạn BC trên hình 33.

Ở một quần thể thực vật, sau 2 thế hệ tự thụ phấn, tỉ lệ cây hoa đỏ giảm 30% và tỉ lệ cây hoa đỏ thuần chủng gấp 1,5 lần tỉ lệ cây hoa đỏ dị hợp. Biết rằng tình trạng màu hoa do một cặp gen gồm 2 alen quy định và hoa đỏ là trội hoàn toàn so với hoa trắng, cấu trúc di truyền của quần thể ban đầu 

A. 0,8 Aa : 0,2aa                                         

B. 0,8AA:0,2Aa 

C. 0,2AA: 0,5Aa:0,2aa     

D. =0,25AA: 0,5Aa:0,25aa