Предмет: Математика, автор: Sa1234m

Два поезда выехали с одной станции в одном направлении. Первый поезд выехал на 2 часа раньше другого и движется со скоростью 40 км/ч второй поезд- со скоростью 80 км/ч Через сколько часов второй поезд догонит первый? На каком расстоянии от станции отправления второй поезд догонит первый поезд?

Ответы

Автор ответа: kmike21

первый отъехал на расстояние 2*40=80 км к моменту отхода второго.
скорость второго на 80 км/ч- 40км/ч=40км/ч больше первого.
Значит он догонит второго через 80/40=2 часа и пройдет к этом времени 80*2=160 км.
ответ: через 2 часа после отправления и на расстоянии 160 км от станции второй поезд догонит первый

Sa1234m: спасибо

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Being queen is a really busy job. Elizabeth II gets up early and begins the day by looking through the newspapers. Then she reads letters from the public (she gets more than 1.000 each week) and try to answer them all. The Queen has daily meetings wither Private Secretary who helps her to go through her paperwork, and lots of meetings with ambassadors, new judges, and bishops.

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The text is about

the Queen s daily meetings.
the Queen s hobbies.
the Queen s daily routine(режим,порядок)
Choose the right answer.

1. How does the Queen begin her day?

She reads the newspapers.
She watches TV.
She listens to the music.
2. Who does she have daily meetings with?

with judge
with a Private Secretary
with a Vice – President
3. How many letters does the Queen get

more than 1000 each month
more than 1000 each week
less than 1000 each week
4. How much time does the Queen work every day?

from 9 a.m. till 5 h.m.
from early morning until late at night
from 10 a.m. till 5p.m.
5. What does the Queen do in her spare time?

She enjoys horse racing, fishing, walking in the countryside
She enjoys tennis, cricket, playing golf
She enjoys painting, drawing, singing songs
Complete the sentences

Being the Queen is a really job.
Her Private Secretary helps her to go through her .
She opens new hospitals, and factories.
And people her all the time
She likes taking on her travels.
In 50 years the Queen has been on 251 visits to different countries
Agree or disagree.

The Queen gets less than 1000 letters each week.
The Queen has her daily meetings with her bishop only.
The Queen has lots of meetings with her Private Secretary.
The Private Secretary helps the Queen to go through her paperwork.
In the afternoon the Queen goes out on public meetings.
Elizabeth II has to work from early in the morning until late at night.
In her spare time Elizabeth II enjoys football.