в трапеции abcd меньшее основание равно 4 дм юдиагональ bd перпендикулярна боковой стороне ab и с большгим основанием образует угол 30 градусов .боковая сторона ab равна 3 дм найти среднюю линию

составить короткое предложение со словом ученик

На молочной ферме от каждой из 60  коров получили за год по 5 420 кг молока.Три пятых части всего этого молока были переработаны на масло.Сколько килограммов молока было переработано на масло?

Test 8. Present Simple or Present Continuous? 1. Hurry up! Everybody (wait) for you. 2. ‘You (watch) TV?’ ‘No, you can turn it off.’ 3. What you usually (do) at weekends? 4. The Volga (flow) into the Caspian Sea. 5. I’m tired. I (go) to bed now. Goodnight! 6. This train is never late. It always (leave) on time. 7. Don’t put the dictionary away. I (use) it. 8. Who is this man? What he (want)? 9. You look serious! What you (think) about? 10. He told me his address but I (not remember) it now. 11. Jane (not drink) coffee very often. 12. Please don’t make so much noise. Tom (do) his homework. 13. I (look) for Ann. You (know) where she is? 14. He never (tell) the truth. I (not believe) him. 15. ‘Tom usually (help) about the house?’ ‘No, he.’ 16. You may phone Peter and ask him. I think he (not sleep) yet. 17. When your children usually (get) up? 18. Why that man (look) at us? You (recognize) him? 19. ‘Can you drive?’ ‘I (learn). My father (teach) me.’ 20. Listen to those people! What language they (speak)?