на дворі було 2 зайці 1 пішов скільки залишилося?

упр.12.вставьте артикль где необходимо: 1)there is ... thick red ... carpet in my room. ... carpet is on ... floor in ... front of ... sofa. 2)where is ... table in your brother's ... room? -his ... table is near ... window. 3)i can see ... fine ... vase on ... shelf. is it your ... vase? 4)we have no ... piano in our ... living-room. 5)my ... uncle is ... maried. he has ... beautiful wife. they have ... son, but they have no ... daughter. 6)i can see ... nice ... coffee-table in ... middle of ... room to ... right of ... door. it is ... black and ... red. i like ... coffee-table. 7)Our ... tv is on ... little ... table in... corner of ... room. 8) there is ... beautiful picture in my father's ... study, ... picture is on ... wall to ... left of ... window.

Прямая и обратная пропорциональные зависимости. Прошу подробно расписать и указать как это пропорциональная зависимость.

Бетонная плита объемом 2,5м³ имеет массу 4,75т. Каков объем плиты такого же бетона, если ее масса 6,65т?