Решить сисету неравенст. 3m+2n=0.5 2m+5n=4

3м+2н=0,5 * (-2)   -6м-4н=1       11н=13   н=1,1818182

 

2м+5н=4   *   (3)     6м+15н=12     м=0,4

 

 

1.Составить во к следующим ответам.

     1. I am doing my homework now.

     2. They usually  do their homework in the evening

     3. My mother went shopping last Friday.

     4. My friends have been in Italy 2 years ago.

2. Используйте глаголы в скобках в правильной форме.

     1. I _______________(has written, wrote, have written)

the letter yesterday.

     2. Tamara ___________ (has, have) already _________ (cleans, cleaned) the room.

     3. I __________ (have done, is doing, am doing) my lessons now.

     4. He ______________ (has done, have done, did) his exercises till six o’clock.

Объяснение:

1.Составить во к следующим ответам.

     1. I am doing my homework now.

     2. They usually  do their homework in the evening

     3. My mother went shopping last Friday.

     4. My friends have been in Italy 2 years ago.

2. Используйте глаголы в скобках в правильной форме.

     1. I _______________(has written, wrote, have written)

the letter yesterday.

     2. Tamara ___________ (has, have) already _________ (cleans, cleaned) the room.

     3. I __________ (have done, is doing, am doing) my lessons now.

     4. He ______________ (has done, have done, did) his exercises till six o’clock.

1.Составить во к следующим ответам.

     1. I am doing my homework now.

     2. They usually  do their homework in the evening

     3. My mother went shopping last Friday.

     4. My friends have been in Italy 2 years ago.

2. Используйте глаголы в скобках в правильной форме.

     1. I _______________(has written, wrote, have written)

the letter yesterday.

     2. Tamara ___________ (has, have) already _________ (cleans, cleaned) the room.

     3. I __________ (have done, is doing, am doing) my lessons now.

     4. He ______________ (has done, have done, did) his exercises till six o’clock.

Объяснение:

1.Составить во к следующим ответам.

     1. I am doing my homework now.

     2. They usually  do their homework in the evening

     3. My mother went shopping last Friday.

     4. My friends have been in Italy 2 years ago.

2. Используйте глаголы в скобках в правильной форме.

     1. I _______________(has written, wrote, have written)

the letter yesterday.

     2. Tamara ___________ (has, have) already _________ (cleans, cleaned) the room.

     3. I __________ (have done, is doing, am doing) my lessons now.

     4. He ______________ (has done, have done, did) his exercises till six o’clock.