Предмет: Математика, автор: helpme1750

помогите умоляю. Пж пж пж​

Приложения:

Ответы

Автор ответа: madlyangel
4

4а

3 см * (4 см - 2 см) + 5 см * 4 см = 26 см2

4б

2 см * (11 см - 7 см)/2 * 2 + 7 см * (2 см + 2 см) = 36 см2

5а

1 раб., 72 места - 3 ч

скорость(раб.)= 72 места/ 3 часа = 24 места/час

1 уч., 72 места - 3 ч * 2 = 6 ч

скорость(уч.)= 72 места/6 ч =12 мест/ч

скорость(общая)=12+24= 36 (мест/час)

144/36=4 (часа)

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: КсюшаКа
как по английски будет:Инна Максимовна вы плохая учительница.
1 год назад
Предмет: Русский язык, автор: germa80
в слове вьюга есть мягкий разделительный знак?
1 год назад
Предмет: Английский язык, автор: u4r5
Раскройте скобки, употребляя глаголы в Past Simple или Past Continuous:

1. When I (to come)
home, my little sister (to sleep). 2. When Nick (to come) home, his brother (to
play) with his toys.         3. When
mother (to come) home, I (to do) my homework. 
     4. When father (to come)
home, Pete (to sleep). 5. When mother (to come) home, the children (to play) on
the carpet.    6. When I (to get) up, my
mother and father (to drink) tea.      
7. When I (to open) the door, the cat (to sit) on the table.         8. While I (to wash) the floor, I (to find)
my gold earring. 9. He (to turn off) the electricity when I (to listen to) the
radio.       10. She (to look) out of the
window when I (to see) her.

 


Раскройте
скобки, употребляя
гла­голы
в
Past Simple или Past Continuous. 

1. I (to play)
computer games yesterday. 2. I (to play) computer games at five o'clock
yesterday. 3. He (to play) computer games from two till three yesterday. 4. We
(to play) computer games the whole evening yesterday. 5. What Nick (to do) when
you came to his place? 6. What you (to do) when I rang you up? 7. I (not to
sleep) at nine o'clock yesterday.      8.
What he (to do) yesterday? - He (to read) a book. 9. What he (to do) the whole
evening yesterday? --He (to read) a book.  
10. She (to sleep) when you came home? 11. My brother (not to play)
tennis yesterday. He (to play) tennis the day be­fore yesterday. 12. My sister
(not to play) the pi­ano at four o'clock yesterday. 13. She (to play) the piano
the whole evening.      14. When I came
into the kitchen, mother (to cook). 15. She  (to cook) the whole day yesterday. 16. We (to
wash) the floor in our flat yesterday. 17. We (to wash) the floor in our flat
from three till four yesterday. 18. You (to do) your homework yesterday? 19.
You (to do) your homework from eight till ten yesterday? 20. Why she (to sleep)
at seven o'clock yesterday? 21. He (to sit) at the table the whole evening
yesterday.
1 год назад
Предмет: Обществознание, автор: shevarutinam
почему во в те времена ценили добро и ценят?
8 лет назад
Предмет: Физика, автор: хюрем3
почему ведётся поиск альтернативных источников энергии
8 лет назад