Tính số đo xx và yy ở các hình 47.48.49,50,51:

Giải:

Hình 47) 

Theo dịnh lí tổng ba góc trong một tam giác ta được:
x+900+550=1800x+900+550=1800
⇒x=1800−(900+550)=350⇒x=1800−(900+550)=350

Hình 48) 

Theo dịnh lí tổng ba góc trong một tam giác ta được:

x+400+300=1800x+400+300=1800
=>x=1800−(400+300)=1100=>x=1800−(400+300)=1100

Hình 49)

Theo dịnh lí tổng ba góc trong một tam giác ta được:

x+x+500=1800x+x+500=1800
⇒2x=1800−500=1300⇒2x=1800−500=1300 

x=650x=650

Hình50) 

Vì yy là góc ngoài tam giác nên ta có:

y=600+400=1000y=600+400=1000

Hai góc xx và ˆDKEDKE^ là hai góc kề bù nên:

x+400=1800x+400=1800

x=1800−400=1400x=1800−400=1400

Hình 51)

Áp dụng định lí tổng ba góc trong một tam giác vào ΔABCΔABC ta có:

ˆA+ˆB+ˆCA^+B^+C^

(400+400)+700+y=1800(400+400)+700+y=1800

y+1500=1800y+1500=1800

y=1800−1500=300y=1800−1500=300

Áp dụng định lí tổng ba góc trong một tam giác vào ΔACDΔACD ta có:

x+400+300=1800x+400+300=1800

x=1800−(400+300)=1100

"Every morning from Monday to Saturday, I get up at 6 o'clock. After breakfast, I go to school by bicycle. It takes me about 20 minutes from my house to get to my school. Usually, I study at school until 11:30 a.m. I return home at noon to have lunch with my family. In the afternoon I attend English and computer classes. I always get home just in time for dinner at 7:30 p.m."

đúng hay sai mình chả bk ddaau

Tet is a national and family festival. It is an occasion for every Vietnamese to have a good time while thinking about the last year and the next year. At Tet, spring fairs are organized, streets and public buildings are brightly decorated and almost all shops are crowded with people shopping for Tet. At home, every is tidied, special food is cooked,offerings of food, fresh water, flowers and betel are made on the family altar with burning joss- sks scenting the air. First-footing is made when the lucky visitor comes and children are given lucky money wrapped in a red tiny envelope. Tet is also a time for peace and love. During Tet, children often behave well and friends, relatives and neighbors give each other best wishes for the new year

hok tốt

Everyone has twenty four hours a day. morning, I usually wake up, brush teeth, wash face, get dressed at 6:15 am, then I have a breakfast and go to school at 7am or 8am. My sessions usually ended the morning at 11 o'clock. then I would go to lunch and rest. My evening started at 13 pm. I will prace what's the lesson learned in the classroom in the morning. I sometimes go running, playing soccer, ... at 17 pm. evenings, I often spend time learning to see the documents and prepare new lessons. but i also do not forget to take the time to read news online, listen to music, watch movies ... I usually go to bed at 1 a:m

Câu hỏi là : How many students in my class are going to travel to Hai Phong this summer.

Đúng nha bn , tk mh nhé !!!

~ HOK TỐT ~

Câu trả lời :

How many students will travel to Hai Phong this summer?

~~~ Học Tốt ~~~

Trả lời : 

D . sugar

ủng hộ nha

theo minh la dap an D

He said that rash due to the sun shold stay away from the chlorine

I almost break down my hear because the school swiming carnival have just corner

I have to give a miss this year and feel very blue whenever think about it

CẢM XÚC

ĐẶC ĐIỂM TÂM LÝ

tall, thin, big, small, short.......

         Dịch :

Steamed sky rice : Cơm nếp hấp

 steamed rice : cơm hấp

 Fried rice : Cơm chiên

 House rice platter :  Đĩa cơm nhà

curry chicken on steamed rice :  gà cà ri trên cơm hấp

 Seafood and vegetables on rice : Hải sản và rau trên cơm

Cơm hấp hấp
  cơm hấp
  Cơm chiên
  Đĩa cơm nhà
gà cà ri trên cơm hấp
  Hải sản và rau trên cơm

hok tốt nha~~

1. she want to go home 

3. you will be myopic

4. He said that he was tired

5. he will be fat =)))

Complete the following compound sentences 

    1. Julia has a headache, and____________he go to the hospital______________________ .

    2.__________________I don't want to have a stomachache___________, so i choose food and drink very careful.

    3.You should spend less time playing computer games, or ____you will have a eyesore_

    4. ________ulia has a headache____________, but he doesn't go to bed early.

     5. Trung eats too many sweets, so___________he has a toothache______________________

Cho dạng đúng của động từ trong ngoặc:
1. The broken table (repair)is repaired yesterday.
2. A new mobile phone (buy)will bought next month.
3. Flowers (water)are being watered in the garden now.
4. English (learn)has been learnt for 3 months by these children.

1.repaired

2.will buy

3.are watering

4.is learnt

5.is watching

6.is read

7.stole

8.broke

100% lun

t mk nha