1358*. Есепті тиімді тәсілмен шығарыңдар. Үш бала бақтан терген алмаларын бөліп алды. Бірін барлық алманың 25%-ін және 5 алманы алды. Екінші қалғанының 60%-ін және 2 алманы алғанда, үшінші бала 20 алма қалды. Балалар бақтан барлығы неше алма терді?
Расстояние по трассе между двумя посёлками 1540 м. Из этих посёлков одновременно навстречу друг другу выехали два велосипедиста. Скорость первого равна 3 м/с, скорость второго 4 м/с. Какое расстояние будет между велосипедистами через 3 мин после начала движения? Через какое время после начала движения велосипедисты встретятся?
Формула движения: S=v*t
S - расстояние v - скорость t – время
3 минуты=60*3=180 секунд.
1)Найти расстояние 1 велосипедиста:
3*180=540 (м).
2)Найти расстояние 2 велосипедиста:
4*180=720 (м).
3)Какое расстояние будет между велосипедистами через 3 мин после начала движения?
1540 - (540+720)= 280 (м).
4)Через какое время после начала движения велосипедисты встретятся?
Пошаговое объяснение:
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В решении.
Пошаговое объяснение:
Расстояние по трассе между двумя посёлками 1540 м. Из этих посёлков одновременно навстречу друг другу выехали два велосипедиста. Скорость первого равна 3 м/с, скорость второго 4 м/с. Какое расстояние будет между велосипедистами через 3 мин после начала движения? Через какое время после начала движения велосипедисты встретятся?
Формула движения: S=v*t
S - расстояние v - скорость t – время
3 минуты=60*3=180 секунд.
1)Найти расстояние 1 велосипедиста:
3*180=540 (м).
2)Найти расстояние 2 велосипедиста:
4*180=720 (м).
3)Какое расстояние будет между велосипедистами через 3 мин после начала движения?
1540 - (540+720)= 280 (м).
4)Через какое время после начала движения велосипедисты встретятся?
Общее расстояние 1540 м.
Общая скорость 3+4=7 (м/сек).
Общее время: 1540 : 7 = 220 (сек.)