y=2x^4-9x^2+7

Y=3x-4/x-2

Ответить на вопросы в Present Perfect 1 Have you had dinner yet? 2 Have you had coffee today? 3 Has your brother left for Kiev? 4 Has she ever met my elder brother? 5 Has Mary been to the canteen yet? 6 Have you found anything to your taste on the menu? 7 Have they paid for the lunch yet?

Сделайте вывод о влиянии плотности вещества погруженного тела и его объема на значение выталкивающей силы.

5 реченнь  з займенником себе з якоїсь літератури