Bức thư giúp ta biết cách nhận ra của cuộc đời trong bất kì hoàn cảnh nào, khuyến khích chúng ta tìm tòi, yêu thích và làm sống cái tôi từ trong sâu thẳm lòng mình.

a: Hệ số tỉ lệ của y đối với x là \(k=x\cdot y=5\cdot3=15\)

b: xy=15

=>\(y=\dfrac{15}{x}\)

c: Khi x=2 thì \(y=\dfrac{15}{x}=\dfrac{15}{2}\)

Để làm được 50 sản phẩm thì người công nhân đó cần:

\(30\cdot20:50=600:50=12\left(phút\right)\)

gọi x; y; z lần lượt là số tiền của mỗi nhà kinh doanh đã góp

vì số tiền của 3 nhà góp vốn tỉ lệ 3 : 4 : 5 nên:

\(\dfrac{x}{3}=\dfrac{y}{4}=\dfrac{z}{5}\)

áp dụng tính chất của dãy tỉ số bằng nhau ta có:

\(\dfrac{x}{3}=\dfrac{y}{4}=\dfrac{z}{5}=\dfrac{x+y+z}{3+4+5}=\dfrac{120}{12}=10\\\dfrac{x}{3}=10 \Rightarrow x=30\\ \dfrac{y}{4}=10\Rightarrow y=40\\ \dfrac{z}{5}=10\Rightarrow z=50\)

vậy số tiền của mỗi nhà kinh doanh đã góp lần lượt là 30 triệu đồng; 40 triệu đồng; 50 triệu đồng

Thanksgiving, celebrated on the fourth Thursday of November, is a special occasion to express gratitude for the harvest and blessings of the year. My family gathers around the table to share a feast featuring roasted turkey, stuffing, cranberry sauce, and pumpkin pie. We also take time to reflect on what we’re thankful for and enjoy games together. I cherish Thanksgiving because it strengthens our family bond and reminds us to appreciate the little things in life!

One of my favorite festivals is Tet, which is the Vietnamese Lunar New Year celebrated in late January or early February. During Tet, my family prepares special foods like sticky rice cakes and sweet treats. We also decorate our home with flowers and orange trees to invite good luck. On New Year's Eve, we gather to enjoy a big family meal, share gifts, and remember our ancestors. I really enjoy Tet because it brings joy and togetherness, marking a fresh start for everyone.

Đề 1

I

1 D

2 C

3 A

4 B

5 D

6 C

7 D

8 A

9 A

10 D

II

1 C

2 D

3 D

4 A

5 C

6 B

giải hộ v ạ

1. My sister can swim well. She can't play badminton. (but)

à………My sister can swim well, but she can't play badminton.………………………………………………………………………………

2. Hanh goes to that French restaurant every week. She loves French food. (so)

à……Hanh loves French food, so she goes to that French restaurant every week……………………………………………………………………………………

3. He was tired last night. He stayed up late to watch a football match. (although)

à……Although he was tired last night, he stayed up late to watch a football match…………………………………………………………………………………

4. I don't like this TV programme. It's so boring. (because)

à……I don't like this TV programme because it's so boring……………………………………

5. My mum went to Hue last month. His mum went to Hue last month, too.(and)

à………My mum and his mum went to Hue last month…………………………………………………………………………………

6. He was lazy, so he got a bad mark.  ( “because”)

à……Because he was lazy, he got a bad mark…………………………………………………………………………………

7. It rained hard yesterday. I went to school on time. (“although”)

à……Although it rained hard yesterday, I went to school on time…………………………………………………………………………………

8. Daisy  has to do her homework. She is very tired .            ( “Although”)

……Although Daisy is very tired, she has to do her homework………………………………………………………………………………………

1 doesn't have to       2 have to
3 have to                   4 don't have to
5 mustn't                   6 have to

1 doesn't have to

2 must

3 have to

4 don't have to

5 mustn't

6 must

1 have to

2 must

3 mustn't

4 have to