1 hình chữ nhật có chiều rộng là 4m và bằng `1/3` chiều dài . Tính chu vi hình chữ nhật ? Anh chị cho em hỏi sơ đồ là gì ạ em chưa học đến nhưng trong toán cô cho ôn lại có

C= 2 mũ 100 trừ 2 mũ 99 trừ 2 mũ 98 trừ .....trừ 2 mũ 2 trừ 2 trừ 1

Cảm nhận đoạn đầu bài thơ vội vàng Giúp e vs ạ

|2x+1| - 10 = -458 Hi các bạn, mik. Là tvm

Giúp mình bài 6 và bài 7 Cảm ơn trước

nhân xét về dan số Bắc Mĩ 2017

mk hỏi câu này 5 lần rùi huhu......ai đó giúp mk câu b vs! pls help me!!

giải các pt sau:1) 3x – 2 = 2x – 3 2) 7 – 2x = 22 – 3x 3) 8x – 3 = 5x + 12 4) x – 12 + 4x = 25 + 2x – 1 5) x + 2x + 3x – 19 = 3x + 5

1. The Second World War _______ in 1939. A. turned up B. took out C. brought about D. broke out 2. “We'd better _______ if we want to get there in time.” A. take up B. put down C. speed up D. turn down 3. I could not _______ the lecture at all. It was too difficult for me. A. make off B. take in C. get along D. hold on 4. My mother had to work 12 hours a day in a factory just to ________. A. tighten the belt B. make ends meet C. call it a day D. break the ice 5. He is coming _______ a cold after a night out in the rain. A. across with B. down with C. away from D. up with

1. We _______ with a swim in the lake. A. gave in B. cooled off C. got out D. took up 2. They’re staying with us _______ the time being until they can afford a house. A. during B. for C. at D. in 3. Since he failed his exam, he had to _ for it again. A. take B. sit C. make D. pass 4. “Why don’t you sit down and _______?” A. make yourself at peace B. make it your own home C. make yourself at home D. make yourself at rest 5. He never lets anything _______ him and his weekend fishing trip. A. come among B. come between C. come up D. come on