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I lay my love on you
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Nguyễn Tất Đạt
23 tháng 6 2018 lúc 9:19

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 \(\frac{5}{6}.\)

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Quỳnhh Hươngg
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Trần Ái Linh
4 tháng 6 2021 lúc 11:36

1. prizes
2. skillful
3.developed
4. communicate
5. By
6. is used

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Khánh Quỳnh Lê
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Nguyễn Minh Anh
10 tháng 1 2022 lúc 21:30

undefined

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Diệp Vi
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Minh Nhân
19 tháng 1 2022 lúc 8:54

1. Did Marco win

2. didn't play / lost

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Diệp Vi
19 tháng 1 2022 lúc 8:54

Question 3. How many goals _________________ (your team/ score) in the first half?

 

Question 4. ____________ (you/ go) swimming this morning?

 

Question 5. Susan and her friends ____________ (come) to Japan three months ago.

 

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phung tuan anh phung tua...
19 tháng 1 2022 lúc 8:55

Question 1. Was Marco  win the golf competition?

 

Question 2. They did not play very well yesterday. They Were lost the match.

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Duy Nguyễn
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Đào Thu Hiền
14 tháng 9 2021 lúc 16:30

1. Where did you find out about Disneyland Resort?

2. When diid you get up this morning?

3. I’ll look through this leaflet to see what activities are organised at this attraction.

4. They’re going to bring out a guidebook to different beauty spots in Viet Nam.

5. I’m looking forward to the weekend.

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Nhi Quỳnh
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Đức Hồng Phạm
9 tháng 3 2023 lúc 20:10

enjoyed

Did Marco win

did not play

did your team score

did not want

Did they go

bought

stopped

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Đỗ Thanh Hải
9 tháng 3 2023 lúc 20:11

1 enjoyed

2 Did Marco win?

3 did not play

4 did your team score

5 did not want

6 Did they go

7 bought

8 stopped

#YN

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NGUYỄN CHÍ tiến
9 tháng 3 2023 lúc 21:00

đung mà

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Nguyễn Hoàng Linh Chi
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Lương Phước Hoàng
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Meomuot
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Sone Yoonsic
3 tháng 2 2020 lúc 14:13

1.

a. Who you met at the party last night?

b. Who did you met at the party last night?

c. Did you meet who at the party last night?

d. Who did you meet at the party last night?

2. My brithday is........

a. on the tenth of October b. on tenth October c. October on the tenth d. on the tenth in October

3. Did you watch the football match on TV.......?

a. last morning b. the morning yesterday c. in the morning yesterday d. yesterday morning

4. When my father was a young boy he....... work very hard

a.must b. should c. had to d. has to

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 Khách vãng lai đã xóa
Trần Tiến Đạt
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Đỗ Thanh Hải
1 tháng 4 2021 lúc 20:23

1 already => have already

2 games => sports

3 better => best

4 joined > join

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