tìm x ∈ z biết: a) x-1/9 = 8/3 b)-x/4 = -9/x c)x/4 = 18/x+1

Ban giai giup minh 1 bai toan nay voi cam on 😀

Vẽ anime đi Ngoài lề : Hôm nay tui đã đánh mất cơ hội ghi điểm trước mắt crush buồn quá :(

Cho hh Na,K,Ba hòa tan hết vào nước được dd A và 0,672l H2. Thể tích dd HCl 0,1M cần để trung hòa hết 1 phần 3 dd A bao nhiêu

Name: ...gnyin Daa. Class: 7AH B. PHONETICS, LEXICO, GRAMMAR I. Choose the best answer. (1.0 point) 1. A. burst 2. A. display 3. A. question D. action C. furniture C. occasion D. cure B. curtain B. unusual D. measure B. tradition C. exhibition 4. Which word has main stress different from the others? A. volunteer calorie 5. We often organize concerts to A. donate 6. Vietnamese people have had the days of the country. B. charity C. melody D. .fund for poor children. C. volunteer .of helping one another since the early B. raise D. grow C. tradition D. religion B. legend 7. A volunteer always helps other people willingly and B. within A. custom ..payment. D. without .of the A. for C. about 8. Community service is the work we do for the community. A. benefits 9. It's a pity that I A. don't join D. haven't joined C. problems "Green Summer" programme last year. C. won't join B. forces D. events B. didn't join lo in the nursing home so far, Julia'?

Nguyên nhân nào dẫn tới sự phân bố của các kiểu thảm thực vật và đất theo vĩ độ?

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Cho hàm số y=f(x)= ( $3m^{2}$ -7m +5)x -2021. CM hàm số luôn đồng biến trên R với mọi m

điền vào mỗi chỗ trống với dạng thích hợp của từ trong ngoặc 1, iceland is considered the most.....country in the world (peace) 2, a.....lifestyle has its advantages and disadvantages (nomad) 3, my brother has been a stamp......for several years (collect) 4, it is a/a.......place to hold a picnic because it is too far from the road (convenience) 5, drinking water in some areas may be........(safe) 6, during my stay in the village,I was.......with several local farmers (friend) 7, encouraging children to eat and drink......is very important (health) 8, local people in the village often wear their.......costumes during the festivals (tradition) 9. please give......to that charity to help the homeless after the flood (generous) 10. the baby slept very........because the bed was really comfortable (sound)

4giờ12phút=..... giờ 12phút6giây=.....phút 152giây=.....phút......giây 3,15giờ=........giờ.....phút