Chu vi sân trường hình chứ nhật là 60m biết 1/3 chiều rộng bằng 2/9 chiều dài .Tính diện tích sân trường

Em cần giải Bài 2,3 Ai giúp em với ạ

chỉ ít thôi giúp điiiiiiiiiiiiiii

tìm tất cả giá trị thực của tham số m sao cho hàm số y = (tanx - 2)/ (tanx - m) đồng biến trên khoảng ( 0; $\pi$/4 ) A) m ≤ 0 hoặc 1 ≤m<2 B) m ≤0 C) 1 ≤m<2 D) m ≥2 giải chi tiết

*** Choose the best answer: 1. The English language _______ in all over the world. A. speaks B. was spoken C. is spoken D. has been spoken 2. Last night when I ______ my homework, the light ______ out. A. did/ went B. doing/ went C. did/ was going D. was doing/ went 3. If I ______ a bird, I _____ in a cage. A. was/ won't live B. am/ won't live C. were/ shan't live D. were/ wouldn't live 4. I can't go because I _____ my work yet. A. don't finish B. am not C. haven't finished D. haven't finish 5. Why don't you _______ extra lessons in the evening? A. take B. takes C. to take D. take to

He doesn't have enough money to buy that house -> That house 2 She no longer cries at night -> She used 3 The television is so expensive that they can't buy -> They can't 4 they use to drink much wine -> they don't

Mn giúp e câu 3,4,5,6 phần đọc hiểu vs ạ

tìm m để hàm số y = -x³ +3x² +3mx +m-1 nghịch biến trên (0; + ∞) A) m ≤ -1 B) m ≤ 1 C) m<1 D) m> -1 giải chi tiết

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Sắp xếp: 38. the market/Rotbots/the children./to/and/can/take care of/go 39. be able to/future/robots/coffee/Wil/the/make/in/? 40. HCM city/vacation./went/for/We/our last summer/to