Trong không gian với hệ tọa độ , cho , biết , phương trình mặt phẳng . Tính , biết mặt phẳng vuông góc với mặt phẳng và khoảng cách từ gốc tọa độ đến mặt phẳng bằng .

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the word that has the underlined part pronounced differently from the rest:

  marvelous                   argument                    armchair                       assistance

• Choose the word that has the underlined part pronounced differently from the rest:

  hairstyle                      schoolyard                      yellow                     yesterday

• Choose a word that has different stress pattern:

  obvious                       impolite                        compliment                          maximum

• Choose a word that has different stress pattern:

  situation                      conversation                     equivalent                      regulation

• Choose a word that has different stress pattern:

   install                           attract                           approach                        kidding  

• Choose a word that has different stress pattern:

  marvelous                    badminton                        absolute                          regretful

• Choose a word that has different stress pattern:

  informality                            communication                      environmental                      dissatisfaction

• Choose the best answer for the following sentence:

  In case you need any ____________, don't hesitate to call for mine.
   

• Choose the best answer for the following sentence:

  This is just an ___________ meeting; you just need to dress casually.
   

• Choose the best answer for the following sentence:

  Each situation of social contact requires a(n) ___________ way of dressing. For instance, jeans are suitable for picnics, not at some high schools in Vietnam.