Теплоход прошёл по течению реки 48км, и столько же- против течения, затратив на весь путь 5 часов. найти скорость течения реки, если скорость теплохода по течению 24 км/ч

Объяснение:

1)    1 ≤ х ≤ 5                  1 ≤ х ≤ 5                1 ≤ х ≤ 5              1 ≤ х ≤ 5

   10 ≤ у ≤ 24         - 24 ≤ - у ≤ - 10         10 ≤ у ≤ 24      1/24 ≤ 1/у ≤ 1/10

 11 ≤ х + у ≤ 29 ;     - 23 ≤ х - у ≤ - 5 ;   10 ≤ х*у ≤ 120 ;    1/24 ≤ х/у ≤ 1/2 .

2)  12 ≤  а ≤ 15, 10 ≤ b ≤ 14 ;     P = 2( a + b ) ;       S = a * b ;

        12 ≤  а ≤ 15,                            12 ≤  а ≤ 15,    

         10 ≤ b ≤ 14 ;                            10 ≤ b ≤ 14 ;

     22 ≤ a + b ≤ 29 ;│X 2            120 ≤ a*b ≤ 210 ;

     44 ≤ 2( a + b ) ≤ 58 ;               120 ≤ S ≤ 210 .        

    44 ≤  P ≤  58 ;  

В - дь :   44 ≤  P ≤  58 ;        120 ≤ S ≤ 210 .      

Объяснение:

WRITING Choose ONE of the topics and write. Topic 1: You are a charitable volunteer in your city and always give a hand to those who are in need: clean the apartments of the disabled people; bring food to animal refuges to feed homeless animals; organise campaigns to raise money and collect toys and clothes for the local orphanages. Your new idea is to write a formal letter to the local mayor to ask him/her for any help he/she can provide to help your charity organisation. Include in your letter the following information: • The title of your charity organisation: • What you have done/are doing aiready; • How you would like the mayor to help your charity organisation. Use appropriate style and examples in your letter.WRITING Choose ONE of the topics and write. Topic 1: You are a charitable volunteer in your city and always give a hand to those who are in need: clean the apartments of the disabled people; bring food to animal refuges to feed homeless animals; organise campaigns to raise money and collect toys and clothes for the local orphanages. Your new idea is to write a formal letter to the local mayor to ask him/her for any help he/she can provide to help your charity organisation. Include in your letter the following information: • The title of your charity organisation: • What you have done/are doing aiready; • How you would like the mayor to help your charity organisation. Use appropriate style and examples in your letter.WRITING Choose ONE of the topics and write. Topic 1: You are a charitable volunteer in your city and always give a hand to those who are in need: clean the apartments of the disabled people; bring food to animal refuges to feed homeless animals; organise campaigns to raise money and collect toys and clothes for the local orphanages. Your new idea is to write a formal letter to the local mayor to ask him/her for any help he/she can provide to help your charity organisation. Include in your letter the following information: • The title of your charity organisation: • What you have done/are doing aiready; • How you would like the mayor to help your charity organisation. Use appropriate style and examples in your letter.WRITING Choose ONE of the topics and write. Topic 1: You are a charitable volunteer in your city and always give a hand to those who are in need: clean the apartments of the disabled people; bring food to animal refuges to feed homeless animals; organise campaigns to raise money and collect toys and clothes for the local orphanages. Your new idea is to write a formal letter to the local mayor to ask him/her for any help he/she can provide to help your charity organisation. Include in your letter the following information: • The title of your charity organisation: • What you have done/are doing aiready; • How you would like the mayor to help your charity organisation. Use appropriate style and examples in your letter.WRITING Choose ONE of the topics and write. Topic 1: You are a charitable volunteer in your city and always give a hand to those who are in need: clean the apartments of the disabled people; bring food to animal refuges to feed homeless animals; organise campaigns to raise money and collect toys and clothes for the local orphanages. Your new idea is to write a formal letter to the local mayor to ask him/her for any help he/she can provide to help your charity organisation. Include in your letter the following information: • The title of your charity organisation: • What you have done/are doing aiready; • How you would like the mayor to help your charity organisation. Use appropriate style and examples in your letter.