Cho đường tròn (O;R) và dây cung CD cố định. K là 1 điểm di động trên đoạn CD và E là điểm trên tia OK sao cho OK.OE= $R^{2}$ . Chứng minh E luôn thuộc 1 đường cố định khi K thay đổi trên CD. Giúp mình nha, đúng mình cho 5 sao luôn.

Cần gấp ❤️❤️ giúp mik vs ạ hứa vote 5 ⭐

1) Tính số mol CuCl2 có trong 500ml dung dịch NaOH 0,2M. 2) Tính số mol và thể tích 50g dung dịch H2SO4 20%. Tính CM.

Giúp mình với😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢😢

Lm và ghi rõ cách lm hộ mk với ạ

cho phương trình x2 - 5x + m =0 ( m là tham số ) tìm m để 2 nghiệm x1, x2 thỏa mãn | x1 + x2 | =3

Vẽ mầm đang ăn NL: Ựa, sao bỗng dưng thấy họa bị cháy hàng

Tạo logo chữ Sakura nha Mk sẽ chọn cái đẹp nhất làm avt

Giải và ghi rõ cách lm hộ mk với ạ

. Reported speech 1. Tom said, “I am kind of tired now.” - Tom said that ____________________. 2. “Will you join us tomorrow?” said Tim to Mi - Tim asked Mi _____________________________. 3. Jim said, “ I met her three years ago.” - Jim said __________________________ 4. “Jim gave a presentation yesterday,” said Nga . - Nga __________________________________ II. Revision. Passive voice 1. That publisher brings out a book every two weeks. 2. That publisher brought out a book last month. 3. That publisher will bring out a book next month. 4. That publisher has brought out a book recently . 5. That publisher is going to bring out a book next week. III. Conditional sentences 1. I (lend) you the sum of money you need as long as you pay it back before next Monday. 2. You have to wear a face a face mask or else you (get) Covid-19. 3. If today (be) Sunday, I (take) my brother to the zoo. 4. My parents (not let) me (go) out unless I (finish) my homework. 5. Knock and they (open) the door. 6. he (get) upset if I didn’t invite him? 1. ‘I’m really stressed out! I’ve had three sleepless nights thinking about my exam.’ → _________________________________________________. 2. ‘I can’t concentrate! It’s too noisy in here.’ → _________________________________________________. 3. ‘She was very upset at first but she’s fine now.’ → _________________________________________________. 4. ‘I don’t think taking risks too often is a good idea.’ → _________________________________________________. 5. ‘He’ll take a cooking class before he goes to college.’ → _________________________________________________. 6. ‘I really wish I could make informed decisions!’ → _________________________________________________. VI. Verb form 1. If only Tom (be) here now. 2. I’d rather you (not act) as if you were the greatest. 3. Tim (play) tennis since he (enter) secondary school. 4. I (not see) her for ages. 5. Don’t go that way. The road (repair). 6. I wish I (be) on a spacecraft now. 7. Imagine (live) in the desert. What would our life be like? 8. I (take) a photo if I saw an alien. 9. You can use my car as long as you (not crash) it. VII. answer VIII. Word form 1. (impress). The sights of Hue City are very _____________. 2. (history). Is Perfume Pagoda a __________site? 3. (botany). Shall we go to the _________ garden? 4. (surprise). ___________, an old man like him managed to reach the top of the mountain. 5. (enjoy). In my opinion, That craft village is an _________ place to go to. IX. Gap fill: poems, ironing, simple, special, skillful, A conical hat may look(1) __________, but artisans have to follow 15 stages, from going to the forest to collect leaves to (2) _________the leaves, making the frames, etc. Hue’s conical hats always have two layers of leaves. Craftsmen must be (3) ________to make the two layers very thin. What is special is that they then add (4) _________and paintings of Hue between the two layers, creating the famous bai tho or poetic conical hats. X. Multiple choice 1. Tim wondered / said / told whether it was a meteorite. 2. Jim, who / whose / that car I borrowed, is a nice guy. 3. - Is Tom home? – No. He was going / has gone / is going out. 4. Jack revised his lessons well. So / Because / Therefore, he got good grades. 5. There were over fifty competitions / competitive / competitors taking part in the contest. 6. Jack suggested / told / said me to consider it carefully.