Cho hai đường thẳng song $d_1:5x-7y+4=0$ và $d_2:5x-7y+6=0.$ Khoảng cách giữa $d_1$ và $d_2$ là

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Một số câu hỏi khác có thể bạn quan tâm.

• Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:  

  (A) It is a good idea (B) to be careful in buying (C) or purchasing magazines (D) from salespersons who may come to your door.

• Cho hàm số . Mệnh đề nào dưới đây sai?   

• Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions: 

  Foreign students who are (A) doing a decision (B) about which school (C) to attend may not know exactly where (D) the choices are located.  

• Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions: 

  Higher education is very importance to national economies and it is also a source of trained and educated personnel for the whole country    

• Nếu gọi là đồ thị hàm số  và là đồ thị hàm số  với . Mệnh đề nào dưới đây đúng ?              

• Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction in each of the following questions:

   My mother told me to watch the milk and don’t let it boil over.    

• Cho hàm số  có đồ thị (C) . Viết phương trình tiếp tuyến của đồ thị (C) tại giao điểm của (C) với trục hoành.  

• Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

  They asked me what did happen last night, but I was unable to tell them.         

• Gọi (C) là đồ thị hàm số . Tìm khẳng định đúng?

• Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

  Nonla, that is one of the typical symbols of the Vietnamese culture, has a conical form.