-
Пожалуйста, помогите, 4 класс.
Соревновались два велосипедиста на дистанции 30 м. Проходя последнюю 3 часть дистанции, второй обогнал первого на 10 с. у кого из велосипедистов скорость была быстрее?-
Предмет:
Математика -
Автор:
abby72 - 5 лет назад
-
Ответы 1
-
V1-средняя скорость первого велосипедистаV2-средняя скорость второго велосипедистаS=30 м -пройденный путь (он одинаков у обоих)t1-время,затраченное первым (в сек)t1-10 -время,затраченное вторым (оно на 10 с меньше)
Так как второй велосипедист обогнал первого,значит,его скорость больше.
-
Автор:
aresio - 5 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
Дано трехзначное натуральное число не кратное 100.
А) может ли чвстное этого числа и суммы его цифр быть равна 90?-
Предмет:
Алгебра -
Автор:
eileenknapp - 5 лет назад
-
Ответов:
1 -
Смотреть
-
-
140 г раствора насыщенного при 60 град.С, охладили до 20 град.С . Найти массу (г) осадка. (S(20 град.С)соль=20г, S(60 град.С)соль=50 г)
1)30 2)27 3)28 4)29-
Предмет:
Химия -
Автор:
chandlerzewa - 5 лет назад
-
Ответов:
1 -
Смотреть
-
-
Выберите правильный вариант в тестах:
№ 1. How long______this book? How many pages of this book______?
а. have you read, you read
б. have you been reading, have you been reading
в. have you read, have you read
г. have you been reading, have you read
№ 2. We always go to Boston for our holidays. We ______there for years.
а. are going
б. go
в. have been going
г. were going
№ 3. I have lost my key again. I______things. I lose things too often.
а. have always lost
б. was always losing
в. am always losing
г. always lost
№ 4. The economic situation is already very bad and it______worse.
а. got
б. would be getting
в. is getting
г. gets
№ 5. Turning from the Temple gate as soon as I______the warning, I______my way to Fleet Street, and then______ to Covent Garden.
а. had read, made, drove
б. have read, made, drove
в. was reading, made, drove
г. read, made, drove
№ 6. Seventy-seven detective novels and books of stories by Agatha Christie______into every major language, and her sales______in tens of millions.
а. were translated, were calculated
б. had been translated, are calculated
в. are translated, are calculated
г. have been translated, are calculated
№ 7. Recently, scientific and technological developments ______human life on our planet, as well as our views both of ourselves as individuals in society and of the universe as a whole.
а. are drastically changing
б. have drastically changed
в. change drastically
г. drastically changed
№ 8. I wish he______last Friday but his flight______because of bad weather. If he______the next day I would have brought him by car.
а. had arrived, was cancelled, had called
б. arrived,have cancelled,had called
в. arrived, was cancelled, called
г. had arrived, had been cancelled, called
№ 9. The room looks very clean.______you______it?
а. Do, clean
б. Had, cleaned
в. Have, cleaned
г. Did, clean
№ 10. He______his hair _____. He looks nice.
а. has, cut
б. had had, cut
в. has had, cut
г. is having, cut
№ 11. They have not lived here for very long. They______ know many people.
а. can not
б. should
в. could
г. might-
Предмет:
Английский язык -
Автор:
dillonfields - 5 лет назад
-
Ответов:
1 -
Смотреть
-
- Алеша, Боря и Вася покупали блокноты и трехкопеечные карандаши. Алеша купил 4 карандаша и 2 блокнота, Боря купил 6 карандашей и 1 блокнот, Вася купил 3 карандаша и 1 блокнот. Известно, что суммы денег, заплаченные Алешей, Борей и Васей, образуют соответственно первый, второй и третий члены геометрической прогрессии. Сколько стоит блокнот?
Топ пользователей
-
Fedoseewa27
35898 -
Askold
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
754
How much to ban the user?
1 hour
1 day
100 years