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23 tháng 11 2017

Tôi tịt

23 tháng 6 2018

I call the number of students didn't take part in Mathemas Competition in class A & B are a & b respectively

(with condition: a & b \(\in\)N*)

,From the theme, we have: \(\frac{1}{3}b+a=\frac{1}{5}a+b\)(Because rhe number of students in 2 class is the same)

\(\Leftrightarrow\frac{b}{3}-b+a-\frac{a}{5}=0\Leftrightarrow\left(-\frac{2b}{3}\right)+\frac{4a}{5}=0\)

\(\Leftrightarrow\frac{4a}{5}-\frac{2b}{3}=0\Leftrightarrow\frac{12a-10b}{15}=0\Leftrightarrow12a=10b\)

\(\Rightarrow\frac{a}{b}=\frac{10}{12}=\frac{5}{6}\) 

So the ratio of the number of student didn't take part of Class A & B is \(\frac{5}{6}.\)

26 tháng 1 2017

BAN THI OLYMPIC TOAN TIENG ANH PHAI KHONG

26 tháng 1 2017

google dịch mà chiến

Câu 2: Read the passage then answer the questions on 16. (Hãy đọc đoạn văn vàjtrả lời những câu hỏi.) Psychologists at Brunel University in London say that certain types of music help people to. get į started and also to exercise for a long time. People who listen to music, exercise for 13 percent longer than people who don't. International athletes óften listen to music when they are training. Doctors know about ithe therapeutic effects of music. Listening to music can help...
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Câu 2: Read the passage then answer the questions on 16. (Hãy đọc đoạn văn vàjtrả lời những câu hỏi.) Psychologists at Brunel University in London say that certain types of music help people to. get į started and also to exercise for a long time. People who listen to music, exercise for 13 percent longer than people who don't. International athletes óften listen to music when they are training. Doctors know about ithe therapeutic effects of music. Listening to music can help people recover after operations. Teachers should pay attention, too. In a study at the University of California, students who took a test while listening to a Mozart sonata scored 30 percent higher than students who took the test in silence: Music also relaxes people after a stressful day. Paulin' Etkin, director of. a music therapy center in London, says that throughout. life's ups and downs, people always respond to music. When someone is nervous or afraid,. it can make them feel better. "Music rhythm is closely linked with the rhythms of the body", she says.

Answer the questions:

1. Who say music can help people do the exercise for a long time?

2. Do doctors think about the effects of music for therapy?

3. What did the University of California do to know about the efeCt of music in school?

4. Can music relax people after a stressful day?

5. What did Paulin Etkin say?

1
20 tháng 5 2020

Câu 2: Read the passage then answer the questions on 16. (Hãy đọc đoạn văn vàjtrả lời những câu hỏi.)

Psychologists at Brunel University in London say that certain types of music help people to. get į started and also to exercise for a long time. People who listen to music, exercise for 13 percent longer than people who don't. International athletes óften listen to music when they are training. Doctors know about ithe therapeutic effects of music. Listening to music can help people recover after operations. Teachers should pay attention, too. In a study at the University of California, students who took a test while listening to a Mozart sonata scored 30 percent higher than students who took the test in silence: Music also relaxes people after a stressful day. Paulin' Etkin, director of. a music therapy center in London, says that throughout. life's ups and downs, people always respond to music. When someone is nervous or afraid,. it can make them feel better. "Music rhythm is closely linked with the rhythms of the body", she says.

Answer the questions:

1. Who say music can help people do the exercise for a long time?

It's Psychologists at Brunel University in London

2. Do doctors think about the effects of music for therapy?

Yes, they do

3. What did the University of California do to know about the efeCt of music in school?

The University of Califotnia made a study to know about the effect of music in school

4. Can music relax people after a stressful day?

Yes, it can

5. What did Paulin Etkin say?

"Music rhythm is closely linked with the rhythms of the body", she said

21 tháng 5 2020

Em cảm ơn ạ ❤️

20 tháng 5 2018

một cuộc khảo sát được tiến hành trên 100 học sinh vào đầu năm. kết quả như sau: 56 sinh viên thích toán, 38 sinh viên thích tiếng anh, 52 sinh viên thích khoa học, 6 sinh viên thích cả toán và tiếng anh, 4 sinh viên thích cả tiếng anh và khoa học, 12 sinh viên thích cả ba môn học. bao nhiêu sinh viên thích cả toán và khoa học, có bao nhiêu sinh viên chỉ thích toán học

20 tháng 5 2018

tớ cần câu trả lời cơ

tớ dịch đc rùi

11 tháng 5 2019

tables

corporation

based on

published

total

Mother

three/ double

venom

11 tháng 5 2019

1. tables

2. corporation

3. based on

4. produced

5. total

6. Mother

7. three ; double

8.sting

13 tháng 2 2018

Đáp án B

Giải thích: cần 1 động từ số ít cho chủ ngữ “technology”

Dịch: Có một chút bằng chứng rằng công nghệ, khi được dùng đúng cách, giúp học sinh học tập.

5 tháng 2 2019

Đáp án A

Giải thích: cấu trúc so sánh hơn với tính từ ngắn “be + adj + đuôi –er + than”

Dịch: Ví dụ, một nghiên cứu cho thấy một lớp học y có ipad đạt điểm kiểm tra cao hơn 23% lớp học thường.