`Tìm\ x:\ x - 90 = 100 - 10 +10^2 + 20`

Bài 2. Rút gọn biểu thức sau : A = |x-4,1|+|x-2/3|-9 B = |2 1/5-x|+|x-1/5|+8. C = |x+3 1/2|+|x|-3 1/2 .

Hộ với ạ giải thích để nha The mother asked her son ... A.where he has been B.whether i had been C.where has hệ been D.where had he been

Cho tam giác ABC có góc A = góc C , góc B = 2. góc C . Tính số đo các góc A,góc B, góc C .Tam giác ABC là tam giác gì ? Vì sao ?

Viết đoạn văn 10 -12dòng nêu cảm nhận của em về nhân vật Đôn-ki-hô-tê trong đoạn trích đánh nhau với cối xoay gió của Xéc-van- tét

giúp em với ạ, em đang vội. có thể dùng dữ kiện câu b để giải câu a ạ, đề sai

II. Complete the sentences with: much, many or a lot of: 1. I don’t have ____________ time to read. 2. Her new school has __________ students. 3. There is ___________ orange juice in the jar. 4. This hotel doesn’t have _____________ rooms. 5. She drinks _______________ tea. 6. My father never drinks ______________ coffee for breakfast. 7. He has _______________ money in his pocket. 8. There are too_______________ pictures on the wall. 9. There aren't _______________ workers who want to quit their jobs. 10.Mark has __________ dogs and I'm sure that he can't take good care all of them. 11.She didn't have _____________ time, so she left. 12.I told you _____________ times before that I don't like her. 13.She has got ____________dresses, but she has not got ___________skirts. 14.We don't drink _________________ water when we eat. 15.I think you put too______________ sugar into my cup of coffee. 16.People don't write _________________ letters nowadays, they prefer e-mails. 4 17.You have ________________friends, don't you? 18.Thank you very ___________________for coming. 19.There are so ___________________things I want to ask you. 20.We have ___________ homework to do tonight. giúp em nhanh với ạ đang cần gấp

phân tích đa thức sau thành nhân tử A. a mũ 3 - ay -a mũ 2 x + xy B. 3x mũ 2 - 6xy + 3y mũ 2 - 12z mũ 2

đốt cháy hoàn toàn 1 este no ,đơn chức,mạch hở rồi dẫn sp qua bình đựng dd NaOH dư, thấy kl bình tăng lên 9,3 gam .Số mol h2O và Co2 sinh ra lần lượt là

I can see from what you say that your mornings are very busy! But what _____ (you/do) in the afternoons? British people ________ (drink) more and more wine, apparently Jim _______ (work) late in the evenings for the past fortnight. The apples _______ (pick) early in the morning. Please be quiet, David. You ____________(always/ interrupt).