Предмет: Математика, автор: gyminok85

Ребята на плоту приплыли по реке 3км за 6 часов. на обратном пути они воспользовались лодкой и вернулись в место отправления через 1ч. Какова собственная скорость лодки? Закончи план решения задачи. 1)найдем скорость течения реки. 2)найдем скорость лодки против течения реки. 3) .............. Запиши решение задачи,ориентируясь на этот план

Ответы

Автор ответа: 25hjoerf10
1
1) 3 : 6 = 0,5 (км/ч) - скорость течения реки.
2) 3 : 1 = 3 (км/ч) - скорость лодки против течения реки.
3) 3 + 0,5 = 3,5 (км/ч) - собственная скорость лодки .
Ответ: 3,5 км/ч.


Интересные вопросы
Предмет: Английский язык, автор: oleg55816
помогите пожалуйста
A.
1. I opened the door and __ (look) inside.
2. Who __ (close) all the windows?
3. I __ (carry) my mom´s shopping bag.
4. I __ (not climb) over the fence.
5. I __ (rip) my shirt.
6. The plane __ (land) ten minutes ago.
7. We __ (live) in that house when I was a baby.
8. My brother __ (not cry) when he fell of his bike.
9. We __ (walk) to school yesterday.
10. She __ (smile) when she saw me.
11. We __ (hurry) to the station to catch the train.
12. She __ (laugh) when I told her the joke.
13. We __ (race) each other on our bikes.
14. Dad __ (not help) me with my homework.
15. Helen __ (whisper) me a secret.
16. Luis Miguel __ (hurry) to catch a bus.
17. We __ (return) our books to the library.
18. She __ (not kiss) the frog.
19. The frog __ (change) into a prince.
20. Two doctors __ (rush) into the room.
21. I __ (not kick) the ball very hard.
22. Who __ (invent) the computer?
23. Dinosaurs __ (live) many years ago.
24. It __ (not snow) last night.
25. They __ (not work) until twelve last night.
B.
1. I __ (loose) my watch in the park.
2. David __ (not hurt) his knee.
3. I kicked the ball and it __ (break) a window.
4. My new shoes __ (not cost) a lot of money.
5. I __ (get) this book from the library.
6. We had a garage where we __ (keep) our car.
7. Ali __ (cut) his knee.
8. The glass __ (fall) off the table.
9. The glass __ (not break).
10. We __ (sell) our old car.
11. We __ (buy) a new car.
12. The bell __ (not ring).
13. We all __ (go) into school.
14. The dog __ (catch) the ball.
15. The man __ (not kneel) down.
16. Our cat __ (run) onto the road.
17. Jane __ (not write) a letter.
18. I __ (buy) a new camera last week.
19. We __ (drive) to a safari park yesterday.
20. Yesterday Dad __ (not take) me to the carnival.
21. Elizabeth __ (give) Eva a chocolate.
22. Jack and Jill __ (not go) up the hill.
23. Her ring __ (cost) ten Euros.
24. I __ (put) sugar in my coffee.
25. He __ (not hit) the ball over the net.