Bài 1:Thực hiện phép tính sau bằng cách đổi về phân số a, 0,5.2,6 b,1,75.3,6 c,0,75.(-4,5) d, (-5,7).(-1,5) Bài 2: a,(15 3/8-14 3/4).0,3 b,(26,05+14,55)+ 1 2/3 c, -3,2. (-15/64)+(0,8- 2 4/15):3 2/3 d,(6- 2 4/5) .3 1/8 - 1 3/5:1/4 e,(-1,2).(3,24)+(0,4- 1 4/15).1 2/3 f,(5 9/8-2 3/4+50%):0,3 CÁC ANH ,CHỊ NÀO GIÚP EM VỚI Ạ EM CẢM ƠN NHIỀU!!!:3

Một ống mao quản hở cả hai đầu bán kính $1mm$ được đổ đầy nước và dựng đứng. Hãy xác định độ cao của cột nước còn lại trong ống mao quản. Bỏ qua độ dày của thành ống. Cho biết $\sigma_{n} = 72,5.10^{3}N/m$

Các lệnh sau lệnh nào hợp lệ nếu không hợp lệ hãy sửa lại a. For i:=100 to 1 do write('A') b. For i:=1,5 to 5 do write('A') c. x:=10; while x:=10; do x:=x+5 Trả lời giúp mik vs mik cần gấp ai trả được thì mik cho 1 câu trả lời hay nhất và cho 5 sao.

MỌI người ơi, giúp mk bài 5 này với ạ!!!!!

Hung is my best firend.He works in a big company -->

ĐỀ SỐ 8 I. Choose the word or phrase that best completes each of the following sentences(2ms) 1. Would you mind…………………..in the front seat of the taxi? A. to sit B. sitting C. sits D.sat 2. A contest in which people have to fetch water from the river is called a……………..contest. A. water-fetching B.water - fetch C. fetching - water D. fetch - water 3. The Pyramid of Cheops is one of the seven………………….in the world. A. temples B.pogoda C. churches D. wonders 4. When the phone rang , I ........................... A. sleep B. sleeping C. was sleeping D. slept 5. I asked him ....................... he liked coffee . A. what B. which C. when D. whether 6. I don’t know how..……………. the game. A. play B. to play C. playing D. played 7. The boy................next to Hoa is a new comer. A. sit B. to sit C. sitting D. sits 8. Thanks………………….inviting me to the festival. A.for B. in C. of D. at II. Supply the correct form of the verbs in parentheses (1m) 1. I ( watch)……………………….TV when the phone rang. 2. I tried ( solve)…………………….......the problem but I couldn’t. 3. She asked me if I( want )………………………….to have a drink. 4. We (learn )......................…………….... English for 3 years. III. Read the text then complete the passage:(1,5ms) in , play , was , game , it , clue Hoa and Nga were bored , so Nga suggested playing a (1)...................called 20 Questions. Nga explained the rules and then the girls started to (2).................. Nga thought of a place and she gave Nhi a (3).................by saying that it wasn’t (4)................VietNam . Nhi found out the place (5)..............in America and she said(6) …….......was the Statue of Liberty . IV. Read the following passage then answer the questions.(1m) I have just received a letter from my elder brother Nam. He is in Australia now. He has been there for six months. My brother is an engineer. He has already visited many places in Australia. He has just bought a car and has gone to Alice Springs, a small town in the center of Australia. He has never been abroad before, so he is finding this trip very exciting. 1. What does Nam do? ………………………………………………………………………………………………. 2. How long has he been in Australia? ………………………………………………………………………………………………. 3. Has he already visited many places in Australia? ………………………………………………………………………………………………. 4. Why is he finding the trip exciting? ………………………………………………………………………………………………. V. Rewrite the sentences with cue words given(1m) 1. He said “I am a teacher”. =>He said……………………………………………………………………………………… 2. “Do you like to visit Da Lat?”Nhi asked Nga . => Nhi asked Nga …………………………………………………………………………….. 3. Ba bought this book last year. => This book ………………………………………………………………………………….. 4. It’s a contest in which people have to cook rice. =>It’s a………………………………………………………………………………………… VI. Use the cue words below to write a complete postcard .(1.5ms) Dear Hoa, I / having / a wonderful time / Da Lat. ………………………………………………………………………………………………… The weather / cold / windy. ………………………………………………………………………………………………… The people/ this city / friendly and helpful. ………………………………………………………………………………………………… Yesterday I / visit / friend, Lan and her family. It / happy / see them. ………………………………………………………………………………………………… Tomorrow I / go to the market to buy /souvenirs for you and my family members. ………………………………………………………………………………………………… See you soon. Love, Huong.

Giải hộ em từ câu 1 đên câu 10 vs ạ

cho hình lập phương ABCD.A'B'C'D' cạnh a. Tính độ dài đường chéo AC' của hình lập phương

mk đang cần gấp ạ. giải các phương trình sau: a, 3(x-2)= 7(10-4x) b, 2x^3 + 5x^2 + 3x=0 c, (x+3)(2x-1)= 4(x+3) d, x(x-2) -3x+6=0

hãy viết một bài văn chứng minh rằng bảo vệ môi trường thiên nhiên là bảo vệ chúng ta