Giúp mình bài 1 và bài 2 với ạ. Mình đang cần gấp ạ

Một thấu kính hội tụ có tiêu cự f = 18cm, vật sáng AB đặt vuông góc vs trục chính xy của thấu kính sao cho OA = d = 10cm a) Vẽ ảnh của AB qua thấu kính b) Tính khoảng cách từ vật đến ảnh c) Nếu AB = 2cm thì độ cao của ảnh là bao nhiêu?

Giải giúp mình với ạ!!!! Mình đang gấp ạ!!! Cảm ơn mọi người nhiều.

Cho tam giác ABC, một đường thẳng song song với BC cắt cạnh AB,AC lần lượt tại M và N. Qua C kẻ đường thẳng song song với đáy BN cắt đường thẳng AB tại P. Chứng minh rằng : AB^2=AM×AP

Giải hộ mình bài này A.75^2+150×25+25^2 B.2019^2-2019×19-19^2-19×1981 Nếu đc thì làm hộ phần trắc nghiệm nốt. Hứa sẽ vote5☆+ cám ơn

GIÚP MK NHA A=($\frac{3-x}{x+3}$ . $\frac{x2+6x+9}{x2-9}$ + $\frac{x}{x+3}$):$\frac{3x2}{x+3}$ A) Rút gọn biểu thức A B) Tính giá trị biểu thức A, với x=- $\frac{1}{2}$

Read the passage carefully, and then do the following tasks. The healthy eating diet Healthy eating is about feeling great and having more energy. If you choose the right foods, your healthy diet will be a tasty diet, too. You can still enjoy your favourite sweet and salty foods, but too much sugar and salt is bad for your body. Dairy products like milk, cheese, and yoghurt are great because they contain calcium and keep your teeth and bones healthy. You should choose low-fat dairy products. Meat, fish, eggs, beans, and nuts are important, too. They keep our bodies healthy and they give us energy to work and play. Whole grains are an important part of every meal. If you eat lots of whole grains, you will have a healthy heart. Whole grains are in bread, cereal, pasta, and rice. Dark bread and brown rice are great sources of whole grains. Fruit and vegetables are the most important part of a healthy diet. They are low in calories and full of vitamins. Eat lots of fruit and vegetables with every meal, and as snacks during the day. Fruit and vegetables with darker colours have more vitamins. Answer the following questions. 1. What does the healthy eating diet help you? 2. What can you also enjoy when you have a healthy eating diet? 3. Why are dairy products good for your health? 4. What is the function of meat, fish, eggs, beans and nuts? 5. Why are whole grains an important part of every meal? 6. What types of foods can we get whole grains from? 7. Why are fruit and vegetables the most important part of a healthy diet? 8. What types of fruit and vegetables have more vitamins?

Giải thứ 2 ngày 6 ạ mong trả lời

Xin chào tất cả mọi người, mình tên Nguyễn Thị Thắm Xinh Đẹp. Hay còn có tên là Đẹp.Mọi người hãy giúp Đẹp bài VD2 này. Đẹp cảm ơn mọi người rất nhiều. Love mọi người nhiều lắm nè. Chụt chụt

Put a word from the box in each gap to complete the following passage are special kinds for when mixed introduction dish easy dried This (1) is called Nem Ran by northerners and Cha Gio by southerners. In Ha Noi, the (2) of Nem Ran dates back to a time (3) Cha Ca had not existed. Although it ranks among Vietnam’s specialty dishes, Nem Ran is very (4) to prepare. Consequently, it has long been a preferred food on (5) occasions such as Tet and other family festivities. Ingredients used (6) Nem Ran comprise of lean minced pork, see crabs or unshelled shrimps, two kinds of edible mushroom (Nam Huong andMocNhi), (7) onion, duck eggs, pepper, salt and different (8) of seasoning. All are (9) thoroughly before being wrapped with transparent rice paper into small rolls. These rolls (10) then fried in boiling oil.