Cho hình bình hành ABCD có AB =6 AD=8.Trên cạnh CD lấy điểm E sao cho DE=4.Đường thẳng AE cắt BD tại O và cắt đường thẳng BC tại F 1) chứng minh tam giác ADE và tam giác FBA đồng dạng với nhau 2) tính OD/OB và BF 3) Chứng minh rằng OA^2=OE.OF 4) Gọi K là giao điểm của đường thằng BE với DF.Tính FK/DK

Cho mình hỏi điền vào chỗ trống là từ gì ạ ! To climb that mountain is a .......... Experience A . Thrilling B . Diverse C . Essential D . Traditional

Bạn lào giỏi toán giúp mik nha Mik se vote 5 sao cho bạn làm nhanh nhất

Có 40g khí Hidro đựng trong 1 bình kín chiếm thể tích 8 lít ở nhiệt độ 27 độ C. Nén khí về thể tích 5 lít sao cho nhiệt độ không đổi. Tính áp suất khí nén.

so sánh 1 1 1 ----- +-------+ ...+ ----- và 1 1.2 1.3 99.100

làm cho mik câu 6,7,8,9,10 mik sẽ cho vote 5 sao nha. Mon g các bạn giúp mik

Điền đúng dạng từ trong ngoặc giúp em với ạ

Read the passage and answer the question Scientists have known a lot about the earth. They understand how mountains are made and what a volcano is. The following example is about volcanic eruptions. Mt. Vesuvius in Italy and Mt. St. Helens in the USA are both famous mountains. They are both volcanoes. A volcano is a mountain that is open at the top. Smoke and hot air come out of the hole. Sometimes, very hot rock also comes out of the mountain. That can make trouble for people nearby. This is what happened with Mt. Vesuvius and Mt. St. Helens. Hot rock poured out of Mt. Vesuvius and covered the town of Pompeii in 79 AD. Everyone in the town was killed. The Mt. St. Helens volcano didn’t kill many people. 1. What is a volcano? 2. Are the Mt. Vesuvius and the Mt. St. Helens both famous volcanoes in Italy? 3. What happened to the people in the town of Pompeii in 79 AD? 4. Did the Mt. St. Helens volcano kill everyone?

REVISION FOR GRADE 7 (19-03-2020) * Reorder the words or phrases into the perfect sentences. 1- /did / What/ she/ last/ on/ a/ week/ farm / do/? ->…………………………………… 2- / The/ is/ post office/ the / left/ to/ of the bank./ -> …………………………………… 3- / My Dinh stadium/ to / three days ago./ went/ He/ ->………………………………… 4- / misses/ She/ because/ her friends./ wants / she/ to school/ go/ to/. ->………………………………… 5- / hospital/ Is/ his/ house/ there/ a/ near/? ->………………………………… 6- /you/ tell me/ Could/ to/ get/the nearest bank/ how/ to/? ->………………………………… 7- / buy/ like/ some postcards/ to/ for me/ you/ Would/? ->……………………………………… 8- / is/ How much/ it/ to mail/ to Japan/ a letter/? ->……………………………………… 9- / take/ to school/ car/ by/ to/ does it/ go/ you/ How long/? ->……………………………………… 10- / are/ They/ to/ going/ tomorrow./ have/ in the mountains/ a/ picnic/ ->……………………………………… The end,

VII. Choose the correct answer to complete the passage. There are many ways of spending free time in Australia. Some people are fond of riding in Snowy Mountain or riding a surfboard in Queensland. (1)__________ love watching kangaroos and koalas in wild forests. My sister says she only enjoys watching Sydney (2)__________ the skywalk. But I myself like going to the Sydney Opera House (3)__________ the great opera singers of the world can be heard. If you are bored with listening to the opera singing, there will always be at least two or three other shows to (4)__________ your taste. 1. A. Many B. Others C. Another D. Other 2. A. near B. out C. from D. to 3. A. which B. that C. at where D. where 4. A. suit B. make C. provide D. give