Вопрос школьника по предмету Алгебра
Задание 5
Составьте математические модели задачи и решите их:
1) Теплоход проходит за 3 часа по течению и 2 часа против течения 240км. Этот же теплоход за 3 часа против течения проходит на 35км больше чем за 2ч. По течению. Найдите скорость теплохода против течения и по течению
2) Трое выиграли в лотерею. Выигрыш распределили так: первому досталось ¼ всей суммы, второму 1/7 всей суммы, а третьему 17000 рублей. Определи общую сумму выигрыша.
Ответ учителя по предмету Алгебра
Ответ:
ыаыаыаыаыаыаыаыаыаыаыаыаыаыаыаыаыааыаы
Объяснение:
Похожие вопросы от пользователей
составить словосочетания со словами (чтобы было существительным)
ледяной. сонный. революционный
used to eat
ate
was eating
had eaten
2.I didn’t see Linda last month because she___around Europe at that time.
travelled
was travelling
had travelled
had been travelling
3.While I ____the dishes last night, I dropped a plate and broke it.
washed
was washing
had washed
had been washing
4.It wasn’t raining when I looked out of the window; the sun was shining. But it___ earlier. That’s why the ground was wet.
rained
was raining
had rained
had been raining
5.The trouble started when Mrs. Leslie Cady ____control of her car on a narrow mountain road.
was losing
lost
had lost
had been losing
6.When Alice was small, she ____of darkness and always slept with the light on.
used to be afraid
was afraid
had been afraid
afraided
7.Greg didn’t want to be late for the theatre. He drove as fast as he could. The play ____as he walked in the door of the theatre.
was just beginning
had just began
just began
had been just beginning
8.
She was not interested in the book because she ____it.
hadn’t understood
didn’t understand
wasn’t understanding
hadn’t been understanding
9.Before I went to bed I decided to check the front door. I was sure my sister ____ it. And I was right!
didn’t lock
hadn’t locked
locked
had locked
10.Rescue workers _____ a man, a woman, and two children from cold rushing water.
had pulled
pulled
were pulling
had been pulling
11.Our neighbours called the police when they found out that somebody ___ into their house.
broke
was breaking
had broken
had been breaking
12.Her face was stained with tears and her eyes were red. She ____ .
cried
was crying
had been crying
had cried
13.He didn’t see me as he was reading when I ___ into the room.
had come
came
had been coming
was coming
14.I saw Paul at the airport. He ___ for his brother’s plane to arrive from Canada.
had been waiting
was waiting
waited
had waited
15.A man once built a house and ___ his friends to visit him.
had invited
was inviting
invited
had been inviting