Stream on BOBR: https://bobr.video/watch?v=eab1db22-e... Materials: https://1.shkolkovo.online/public-sto... 🥇Six-month course of preparation for the Unified State Exam/Basic State Exam: ➡️Unified State Exam: https://3.shkolkovo.online/na-poryado... ➡️Basic State Exam: https://3.shkolkovo.online/na-poryado... ➡️10th grade: https://3.shkolkovo.online/na-poryado... 🎯 Spin the roulette and get an additional discount 👉🏻https://3.shkolkovo.online/fortune?ut... 💸Find out more about how to save money here⬇ https://3.shkolkovo.online/vozvrat-nd... All our current promotions and discounts👉🏻 https://3.shkolkovo.online/special?ut... 🤩Feedback from our students👉🏻 https://2.shkolkovo.online/reviews?ut... 📲Telegram channel on mathematics with MO👉🏻 https://t.me/MO_EGE 📲VK group: https://vk.com/shkolkovo_math 💥 Subscribe to notifications and mailing of useful materials VK👉🏻 https://vk.com/app5898182_-185634090#... Our channels: Preparation for the 2025 Unified State Exam in Shkolkovo ✔️ Mathematics with MO and Russian language with TA (Shkolkovo main channel): / @shkolkovo ✔️ Maxim Koval. Vlog of a math teacher: / @kovalmo ✔️ Physics with AB: / @shkolkovo_phys ✔️ Biology with EB: / @shkolkovo_bio ✔️ Chemistry Mutagen: / @mutagenege ✔️ Social Science and History Histructor: / @histructor ✔️ Social Science with MV: / @shkolkovo_obsh ✔️ History with AB: / @shkolkovo_history ✔️ English: / @shkolkovo_english ✔️ Computer Science BU: / @infbu ✔️ Babaev Alipasha Expert of the Unified State Exam in Mathematics: / @egemath_expert Preparation for the OGE-2025 in Shkolkovo ✔️ Mathematics OGE with AF and Russian language OGE with CN: / @shkolkovo-oge ✔️ Biology OGE with EV: / @shkolkovo_bio ✔️ Physics OGE with GK: / @shkolkovogk ✔️ Social Science OGE with EK: / @kant_soc ✔️ Computer Science OGE with MS: / @shkolkovo_inf_oge Olympiad areas in Shkolkovo ✔️ Economics. Shkolkovo Olympiads: / @econbyshkolkovo ✔️ Olympiad Mathematics with DA: / @shkolkovo_olymp ✔️ Olympiad Physics with AB / @shkolkovo_phys 00:00 Start of the webinar. What will happen today? 03:09 B-1. Time formula. Raft motion time. Table for the yacht. It remains to compose the equation! 15:09 B-2. A task similar to the previous one! Let's compose the equation right away. Half-discriminant formula 23:56 B-3. Productivity formula. Fill in the table, equate the time 43:40 B-4. Fill in the table again and compose a similar equation. Let's check the calculations! 56:46 B-5. What does it mean “the first object caught up with the second one if they started from the same point”? We find how the speeds are related and make an equation 1:11:40 B-6. We use the previous life hack, express the speed of the first through the second! And then a regular problem on motion 1:22:20 B-7. Concentration formula. We fill in the table. We make an equation, equating the masses of nickel. We read what we need to find! 1:32:16 B-8. We make an equation based on the fact that the amount of dry matter in raisins and grapes is equal! 1:37:40 B-9. We fill in the table and get a system of equations. It remains to solve it! 1:44:47 B-10. We immediately write the system, since the problem is similar to the previous one 1:47:03 B-11. The performance of the first pipe is a variable and we express everything through it. We equate the time 1:55:22 B-12. We express one speed through another and immediately write an equation! 2:00:30 B-13. Fill in the table, understand how time is related, and write an equation. Half-discriminant formula 2:09:03 B-14. Write the equation. Analyze to which part 6 hours should be added! 2:13:38 Average amount of time that should be spent on each problem from the first part with the usual option 2:18:58 B-15. Express the time of each ship and understand where 8 hours should be added to equalize the time 2:22:30 B-16. Write an equation similar to the equation from the previous problem. Guess the roots according to Vieta 2:27:01 B-17. The difference from the previous problem is that the cyclists left together, but arrived at different times. Write a table and write the equation 2:30:33 B-18. Write the equation without a table. Roots are selected according to Vieta 2:32:53 End of the webinar, answers to chat questions! 2:39:53 Average amount of time that needs to be spent on each task from the second part