Используя геометрические построения, докажите, что в плоском зеркале -размеры изображения равны размерам предмета -расстояние от предмето до зеркала равно расстоянию от зеркала до изображения.

Изобразите фигуру,координаты которой удовлетворяют системе неравенств {3x+2y≤6 x-y≥3 2y-x+2≥0 Все это одна система неравенств!

периметр квадрата 36 м.Найдите площадь этого квадрата.

Fill the gaps with the verb in brackets using the Past Continuous or the Past Perfect
Continuous.
 
Example:  We _____________ along the road for about 20 minutes when a car stopped and the driver offered  us  a  lift.  (to walk)  – We  had  been walking  along  the  road  for  about  20 minutes when  a  car stopped and the driver offered us a lift.
    When  I  arrived,  everyone  _____________  round  the  table with  their mouths  full.  They _____________. (to sit, to eat) – When I arrived, everyone was sitting round the table with their mouths full. They were eating. (to sit, to eat)
 
1.  When  I asked Carlos  if he wanted  to go out, he  said he couldn't because he _____________ an assignment. (to finish)
2.  Scarlet came into the room panting. She _____________ round the park. (to jog)
3.  Scarlet wasn't in. She _____________ around the park. (to jog)
4.  I _____________ a bath when I suddenly had a great idea. (to have)
5.  He told me he ______ seriously _____________ about finding another job soon. (to think)
6.  He _________________ about finding a new job for about a year before he finally got round to it. He’s happy now. (to think)
7.  It was obvious from her outrageous behaviour that she _____________. (to drink)
8.  I _____________ a latte in the Café New York, when I saw a famous actor walk past the window. (to drink)