Hi Lam,

Are you free next Friday? I'd like you to go to the cinema. Do you want to come? I thought you might like to come with us. Maybe it will be at 7.00 pm. I will pick up you tomorrow at 6.30, so we can go out to eat at a restaurant nearby. Let me know if you want to come.

See you soon,

Thi

Tran Phuc Giang Thi

1. I think we will travel to the hyperloop in the future.

2. Traffic in big cities often worse than small towns.

3. Are there usually any special activities for children in festivals?

Question 1: Last night, I didn't order milshake because I wasn't thirsty.

Question 2: How much time do you spend to do math homeowork each day?

Question 3: Eating fruits and vegetables is the healthiest way to stay fit.

1. Reuse means using something again instead of throwing it away.

2. Did your school organise the donation drive last winter?

a) A = \(\left(\frac13-\frac{8}{15}-\frac17\right)+\left(\frac23+\frac{-7}{15}+1\frac17\right)\)

A = \(\frac13-\frac{8}{15}-\frac17+\frac23+\frac{-7}{15}+1\frac17\)

A = \(\frac13-\frac{8}{15}-\frac17+\frac23+\frac{-7}{15}+\frac87\)

A = \(\left(\frac13+\frac23\right)-\left(\frac{8}{15}+\frac{7}{15}\right)+\left(\frac87-\frac17\right)\)

A = \(1-1+\frac17\)

A = \(\frac17\)

Vậy A = \(\frac17\)

1. My mother is fond of going jogging in the morning.

2. My sister find it difficult for her to lift weight.

3. We collected plastic bottles and sent them to the factory.

1. My mother is fond of going jogging in the morning.

2. My sister find it difficult for her to lift weight.

3. We collected plastic bottles and sent them to the factory.

Xét tam giác AMB và tam giác AMD, ta có:

c: AB = AD (gt)

g: góc BAM = góc DAM (gt)

c: AM chung

=> Tam giác AMB = Tam giác AMD (c.g.c)

=> góc ABM = góc ADM (2 góc tương ứng)

BM = MD (2 cạnh tương ứng)

Có góc ABM + góc MBH = 180 độ (kề bù)

góc ADM + góc MDC = 180 độ (kề bù)

=> góc MBH = góc MDC

Xét tam giác MBH và tam giác MDC, ta có:

g: góc MBH = góc MDC (cmt)

c: BM = MD (cmt)

g: góc BMH = góc DMC (đối đỉnh)

=> tam giác MBH = tam giác MDC (g.c.g)

=> BH = DC (2 cạnh tương ứng)

Mà AB = AD (gt)

=> AH = AC

=> tam giác AHC cân tại A (đpcm)

a) Ví dụ:

- Người đàn ông đẩy chiếc ô tô chết máy (người đàn ông tác dụng lực đẩy lên chiếc ô tô chết máy)

- Cậu bé kéo chiếc xe cút kít (cậu bé tác dụng lực kéo lên chiếc xe cút kít)

b)