Лошадь тянет телегу с постоянной скоростью 0,8 м\с, прилагая силу 400 H. Какую работу она совершила при этом за 2 часа?

при каких значениях параметр а имеет 2 корня

х^4-8х^2+7=а

назовите отдел,класс,семейство,род капусты огородной

Современно ли творчество А. Блока? (развёрнутое сочинение)

Ребят помогите пожалуйста я очень прошу !!! Надо срочно) заранее спасибо! Раскройте скобки и вставьте правельный глагол?

1. The building of the house (to begin) last April. 2. I already(to meet) Peter on Monday. 3. Nina just (to finish) work. 4. Don't make noise! Father (to work). 5. What you (to read) now? — I (to read) "Jane Eyre" by Charlotte Bronte. 6. We (to grow) tomatoes next summer. 7. My watch (to stop). There (to be) something wrong with it. 8. You (to see) Jack today? — Yes, I (to see) him at the institute. 9. My friend (to go) to the library every Wednesday. 10. What are you (to look) for? 11. We (to go) on a tramp last Sunday. 12. Your brother (to go) to the country with us next Sunday? 13. We (to cook) our meals on a fire last summer. 14. My sister (to wash) the dishes every morning. 15. You (to invite) your cousin to stay with you next summer? 16. How you (to help) your sister last summer? 17. I (to send) a letter to my friend tomorrow. 18. Every morning on the way to school I (to meet) my friends. 19. He (not to go) to the country yesterday. 20. What you (to buy) at the shop tomorrow?