Bài 1 a) (-2,5.0,38.0,4) - [0,125.3,15.(-8)] b) [(-20,83).0,2+(-9,17).0,2]:[2,47.0,5-(-3,53).0,5] Bài 2 a) 3,26-1,549 b) 0,167-2,396 c) -3,29-0,867 d) -5,09+2,65 Bài 3 a) (-3,8)+[(-5,7)+(+3,8)] b) (+31,4)+[(+6,4)+(-18) c) [(-9,6)+(+4,5)]+[(+9,6)+(-1,5)] d)[(-4,9)+(-37,8)]+[(+1,9)+(+2,8)]

Cho tam giác ABC vuông tại A, đường cao AH. Biết AB = 7 cm, BC=25 cm. Tính góc B và góc C (làm tròn đến phút)

Chuyển thành câu bị đọng: They will pick me up at my house

VIII. Rewrite the following sentences without changing their meaning. 1. My parents want to buy that house but they don't have enough money. My parents.... 2. I usually spend 20 minutes riding my bike to school. → It ............. 3. There is a smell of onions in this room. → This room........... 4. It isn't easy to make friends in a new shool. → To ........... 5. Knowing English is useful. → It's.......... 6. Fred is a good tennis player. → Fred........... 7. It's boring to talk to Jill. → Jill's............. 8. What is your opinion of Mai's book? → What do 9. Khanh keep interrupting me. → Khanh is.... 10. What is the weight of that piece of meat? → How much... IX. Fill in each blank with a suitable word : Plan ,gap, early ,population, with ,hole ,about, mankind Young people can bring enthusiasm, energy, creativity and flexibility to an organization. If your organization works (1)__ __ young people, in anyway, young volunteers can add value to your services by bringing a youth perspective through new ideas, theories and knowledge. They will also help bridge the (2)_ between generations. Engaging with young people also allows your organization to (3) _______- for the future and help to prevent your volunteer base from shrinking over time, as the ageing of the (4) _ _begins to affect the ways in which people volunteer. Having young people in your organization contributes to the future of volunteering and the community - people who start volunteering _tend to continue to volunteer for the rest of their lives giúp mình với hứa vote đủ

Edit oc dưới Phải dùng app ibis Cấm spam Ko đẹp = bc

Các bạn HSG và những bạn tài năng giúp mình giải hộ bài này với ạ. Mình cần gấp nha

1. Tìm x: a. 37-(x-25)=x+14 b. 3x-(6^3-x)=2005

giúp mình nha Tìm nghiệm nguyên của phương trình $x^{2}$ +5$y^{2}$-4xy+4x-4y+3=0

Mn ơi giải giúp mk câu 9 và 12 vs ạ Mk cảm ơn

Giúp vs ạ e cần gấp hứa vote 5 sao