Предмет: Математика, автор: egorshashkov

Реши задачу с помощью уравнения:
Машина ехала по ровной дороге с постоянной скоростью.На спуске её скорость увеличилась в 2 раза.Затем на подъёме её скорость уменьшилась на 25 км/ч и стала равной 95 км/ч.С какой скоростью машина ехала по ровной дороге?

Ответы

Автор ответа: bodiawka

1) 95+25=120 (км/ч) -скорость при спуске; 2) 120:2=60 (км/ч) - скорость по ровной дороге

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Биология, автор: danilkargin1211

Какая часть скелета у
штангистов, грузчиков
испытывает наибольшую
нагрузку?

7 лет назад

Предмет: Математика, автор: perekopnyikirill3011

Помогите плиз!!!!!!!!

7 лет назад

Предмет: Английский язык, автор: nartur687

Lots of kids love video games. In fact, they like them so much that they might hear something like this from mom or dad: "Enough! Unplug that thing and find something else to do!"
It can be good advice, even if you were just about to crash through to the next level. Why? Too much of anything is just too much. It's true that some studies have shown certain video games can improve hand-eye coordination, problem-solving skills, and the mind's ability to process information. But too much video game playing may lead to health problems.
It's hard to get enough active play and exercise if you're always inside playing video games. And without enough exercise, kids can become overweight.
Really overdoing video games also could affect other important stuff, like friendships and how well a kid does in school. And kids who play violent video games might act more aggressively.
But here's the good news: Playing video games some of the time can be OK. Just choose quality games and limit screen time - which includes TV, computer, smartphone, tablet, and video game time combined - to no more than two hours a day.
A good game will be the right one for how old you are. Games are rated like movies and your mom or dad can help figure out which ones you should use. If you can choose one that gets you up and moving, that's even better.
You might challenge your mom, dad - or even your grandma - to swing the bat in a game of baseball or try out some fancy moves in one of the dancing games. Could your grandma be a dancing queen? Time to find out!

1. Many kids like…
A) to eat all day
B) to buy computer games
C) to play videogames

2.Studies have shown certain video games can…
A) improve appetite
B) improve hand-eye coordination
C) improve memory

3.Playing video game may lead to problems…
A) with health
B) with communications
C) with educations

4.Kids act more aggressively if play … video games
A) entertaining
B) violent
C) educational

5. How much time should you play computer, smartphone, tablet, and video game time combined?
A) more than five hours a day
B) three hours a day
C) more than two hours a day

7 лет назад

Предмет: Алгебра, автор: ad700900

3(х +
1)(х - 1) = 2(х - 2)(х + 2) + х2 + 2х

10 лет назад

Предмет: Математика, автор: Аноним

Папа посмотрел по телевизору документальный фильм, передачу "Новости" и прогноз погоды. Фильм шел 35 мин, а "Новости"-20 мин. Сколько минут шел прогноз погоды, если папа смотрел телевизор один час? Написать с пояснениями

10 лет назад