theo kế hoạch mỗi ngày 1 tổ sản xuất phải hoàn thành 120 sản phẩm. khi thực hiện mỗi ngày tổ đã làm ra 130 sản phẩm nên đã hoàn thành kế hoạch sớm hơn 2 ngày. hỏi theo kế hoạch tổ phải sản xuất bao nhiêu sản phẩm

\(\dfrac{x+1}{x-2}-\dfrac{5}{x+2}=\dfrac{12}{x^2-4}+1\)

\(\dfrac{x+2}{x-3}+\dfrac{x-2}{x+3}=\dfrac{2\left(x^2+6\right)}{x^2-9}\)

tam giác ABC. trên AB lấy điểm M, trên AC lấy điểm N. biết AM=3cm, MB=2cm AN=7,5 NC=5cm.
a) chứng minh MN//BC

I. Fill in each blank with “a”, “an”, or “the” to complete the following passage.

(1)__________ history of Da Nang Museum of Cham Sculpture started in 1891 when (2)____________ French scientist began to collect Cham sculptures that had been discovered in scattered areas of Quang Nam Province and brought them to Da Nang.

(3)___________ first museum building was designed by French architects, and construction began in 1915 and was finished by May 1916. (4)___________ Museum has played (5)_________ important role in preserving sculpture items featuring the cultural, spiritual and ritual lives of the Cham people.

II. Use the correct form of the words in brackets to finish the sentences.

1. Terraced rice fields in Sa Pa are slopes claimed for cultivation in hilly or ________ areas. (mountain)

2. Some ethnic groups use their own _________ languages. (write)

3. It is difficult to persuade young people to keep the ________ way of life. (tradition)

4. Are you interested in ________ stamps? (collect)

5. People in the countryside work ________ on their farms than we can imagine. (hard)