Câu 2/ Cho tam giác ABC và một điểm O nằm trong tam giác đó . Gọi P,Q,R lần lượt là trung điểm của các đoạn thẳng OA , OB , OC a/ Chứng minh tam giác PQR đồng dạng với tam giác ABC b/ Tính chu vi của tam giác PQR , biết rằng tam giác ABC có chu vi bằng 543cm KHỎI CẦN VẼ HÌNH , AI LÀM ĐƯỢC BÀI NÀY MÌNH HỨA 5 VOTE + 1 LỜI CẢM ƠN

mọi người cho mình tham khảo bài 5 với ạ (ko cop mạng nhé)

giúp mk với mk cần gấp bài 5 nha

Khoáng sản là gì

Tổng ba góc của tam giác bằng bao nhiêu? Vẽ hình ghi hệ thức theo hình vẽ

Ai giúp e vs hứa vte 5s Tổng của hai số là 75 số hạng thứ nhất là số tròn chục nhỏ nhất tìm số hạng thứ hai

Mình đang cần gấp mong mn giải giúp hứa vote 5*❤ ạ

Ex 2. Rewrite the sentences in passive voice. 1. A magnitude 7.1 earthquake shook Southern California on Friday. ________________________________________________________________ 2. They will provide temporary housing to earthquake victims as soon as possible. ________________________________________________________________ 3. Rescue teams have saved hundreds of people from floods in Metro Manila. _________________________________________________________________ 4. An average of 20 typhoons hit the country every year. _________________________________________________________________ 5. A massive landslide buried dozens of homes near a Central Philippine mountain. __________________________________________________________________ 6. They are repairing roads and bridges damaged by the hurricane. __________________________________________________________________ 7. Across the northwest Florida coast, people were clearing storm debris 8. Authorities have lifted a tsunami warning after a strong earthquake. __________________________________________________________________ 9. Submarine volcanic eruptions can cause tsunamis. _________________________________________________________________ 10. Will the government send troops to flooded regions? _________________________________________________________________ Ex 3. Complete the sentences with the past perfect form of the verbs in brackets. 1. Officials said the blaze_________ (damage) five houses in the area. 2. Before Hurricane Sandy struck the US Northeast, it_________ (kill) 72 people in theCaribbean. 3. US Weather Service_________ (not issue) any warning by the time the tornado moved toa City nearby. 4. As of Monday night, more 10,149 people_________ (leave) their homes across theprovince. 5. We _________ (not experience) any natural disasters before we were trapped in anavalanche last month. 6. What_________ (the government/ do) by the time the mudslide occurred? 7. El Nino weather_________ (hit) Mekong Delta as the worst drought in 90 years, report said. 8. Many local people said that they_________ (never/ see) such a fierce storm in their life. 9. Those evacuees_________ (not return) home by late December. 10. _________ (people/ evacuate) the area when the hurricane hit? Ex 4. Put the verbs in brackets into the past simple or past perfect. 1. By the time the firefighters_________ (arrive), the fire_________ (already destroy)over 50 hectares of pine forests. 2. Two people_________ (report) that flames_________ (trap) them inside a smoke-filledapartment. 3. It_________ (rain) all morning before the tornado_________ (touch) down. 4. They_________ (not know) where to shelter from the storm because nobody_________ (tell) them. 5. _________ (you/ already leave) the office when the fire_________ (start)? 6. The post_________ (not arrive) when I_________ (leave) home this morning. 7. It_________ (be) cloudy for days before it_________ (start) to rain heavily and_________ (flood) the whole City. 8. When I_________ (get) to the check-in desk, I realized I_________ (leave) my ticket athome. 9. After Tom and his neighbours_________ (put out) the fire, the fire engines_________ (arrive) at the cottage. 10. She_________ (recognize) the warning signs that she_________ (learn) in a schoollesson on tsunami two days before. 11. By the time the rescuers_________ (arrive), they_________ (run) out of food and water. 12. The rescue team_________ (find) the child after they_________ (search) for ten hours.

vẽ tranh tỉnh vật kiểu như ấm trà hoa quả V.... ( cho cj huyền )

làm hộ 2 bài với ạ! 8h tối nay mình cần