Hương và Hồng hẹn gặp nhau lúc 10g 40p sáng. Hương đến chỗ hẹn vào lúc 10g 20p còn Hồng đến trễ mất 15 phút vậy Hương phải đợi Hồng trong thời gian bao nhiêu ?

Các bạn giúp tớ với ạ! Giúp tớ làm câu 4 và câu 5 thui nhó!!!

xác định thành phần % về thể tích của các khí có trong hỗn hợp X gồm CO và H2 biết d x/H2=10,75

Cái này giờ làm sao ạ nó ko gửi mã về

giúp mik vs ạ mik vote bạn 5 sao ạ

Cách nào sau đây có thể dùng để thu khí Hiđro và khí Oxi trong phòng thí nghiệm? *

1 mảnh vườn hình chữ nhật có chiều dàu 105m , chiều rộng 60m . Người ta muốn trồng cây xung quanh vườn sao cho mỗi góc vườn có 1 cây và khoảng cách giữa 2 cây liên tiếp bằng nhau . Tính khoảng cách lớn nhất giữa 2 cây liên tiếp? Khi đó tổng số cây trồng đc là bao nhiêu

giúp e làm bài đọc hiểu với ạ, e cần gấp lắm mọi ng ơi

1. You can’t walk here. 2. You can’t eat or drink here. 3. You should drive carefully. 4. You can park here for free. 5. You can’t go to class. A.all tickets sold B. children crossing C. sorry no lesson today D. keep off the grass E. cap park first 30 MIN free F. computer room no food on drinks allowed 1- …… 2- …… 3- …… 4- …… 5- …… III. Read the following passage and mark the sentences as True (T) or False (F). (1.5 pts) ALBERT PARK Albert Park is located only three kilometres from the Melbourne city centre. It is a 225 hectare sporting and recreational park. The park is a beautiful, relaxing, and fun place to spend the day. You can enjoy a picnic or barbecue at one of the nine picnic areas. There is also a large lake which is home to a gorgeous family of swans (thiên nga) and is a lovely place to take a walk. If you are more adventurous, you can take some lessons at the yacht and rowing club or hire a boat just for fun and go for a paddle. Albert Park is host to some of Melbourne’s most exciting events. In May, the 'Million Paws Walk' sees many dogs play and run through the park with their owners to raise money for charity. Throughout the year there are various 'Fun Runs', and in March the 'Foster's Australian Grand Prix Carnival' is held here. T F 1. Albert Park has an area of 225 hectares. 2. The park is a nice place for picnics. 3. Here you can see swans. 4. The yacht and rowing club is only for adventurous people to learn how to sail and row. 5. Dog running for charity is an exciting event held in March. IV. WRITING: I. Rewrite the sentences so that they have the same meaning as the original ones. (1.5pts) 1. There are three interesting films on VTV3 today. => Today VTV3 has ______________________________________________________________. 2. My favourite programme on TV is cartoons. => I like ________________________________________________________________________. 3. Nobody in my class is as intelligent as Linh. => Linh is the ___________________________________________________________________. 4. We do a lot of outdoor activities in summer. => We take part in ______________________________________________________________. 5. Life in the city is more interesting than life in the countryside. => Life in the countryside is more ____________________________________________________. II. Write a short passage about the TV programme you like best use these suggested ideas. (1.5pts) - Name of theprogramme - The channel and time it is on. - The content of the programme - The reason they like it - Their feelings/ comment. …………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… cho 5*

giải phương trình sau a. 4x^2 - 12x + 5 = 0 b. x^2 + x - 2 = 0