Trộn 150 gam dd NaOH 10% vào 460 gam dd NaOH 3% để tạo thành dd mới. a)Tính C% dd thu được b)Tính nồng độ mol dd thu được biết thể tích sau khi trộn là 2 lít
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vt calli:bé linh cute hoặc vẽ ảnh dưới
3 từ cứu d
Tìm điểm sao cho các đường thẳng sau luôn đi qua dù m lấy bất cứ giá trị nào: y=(2m+5)x+m+3
Vẽ mầm rùng mình Nl: Cảm giác bất an, chắc mai lại gặp chuỵn gì xui xẻo òi ;-;
1. My father / often / travel / Ho Chi Minh city / every summer. 2. The students / play football / now. 3. My parents / usually / watch TV / in the evening. 4. He / go swimming / his friends / next Sunday 5. Peter /not study/ very hard. // He never/ get /high scores. 6. Mary / come /to the party tonight. 7. Your father / repair /your motorbike /at the moment. 8. My student/ draw/ a beautiful picture. 9. He / go/to school every day. 10. Ms Mai / not go/ to work by car. 11. John / take / the bus to school/ tommow 12. He / play /volleyball/ with / his friends / now. 13. Mary often / walk / to school 14. I / visit / my grandmother / next week 15. They / not come/ Nha Trang / next month.
I. Rewrite the sentences without changing the meaning. Use the given words: 1. For me - Going fishing is more interesting than reading books at home. -> 2. My uncle is a slower and more careful driver than I am. -> 3. We didn’t enjoy the trip because of the heavy rain. -> 4. Life in the past is not as comfortable as life nowadays. -> 5. It took us about two hours to plant those trees yesterday. ->
Tính đạo hàm và xét dấu y: a. y = $\frac{2x+3}{2x^{2}-x}$ b. y = x+2 - $\frac{1}{x+2}$
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