Предмет: Математика, автор: Kalashnikova2001

б) и в)
#1
пж помогите!

Приложения:

Ответы

Автор ответа: 9182445086
0
б) 1/6+1/3=1/6+2/6=3/6=1/2-часть бака наполняют обе трубы
ответ: 1/2часть бака. Через 2 часа обе трубы наполнят бак.

в) 15-10=5(минут) потребуется чтобы наполнить бак через обе трубы.
, ответ: чтобы наполнить бак обеими трубами потребуется 5 минут.
Автор ответа: TigerYa
0
В) не верно, 1труба=за 10мин; и 2труба=за 15мин; 1т+2т= быстрее наполнится чем с каждой исправьте
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Кыргыз тили, автор: electrise31
Көк серек" чыгармасында кайсы бөлтүрүктү өлтүрүп коюшат?

ДАЮ 50 БАЛЛОВ СРОЧНО
6 лет назад
Предмет: Английский язык, автор: luka1916
1 What is the area where a polar bear lives called?
A the igloo
B the desert environment
C the Arctic habitat
D the winter habitat

2 The conditions in an environment are caused by:
A physical environmental factors.
B summer factors and winter factors.
C day factors and night factors.
D only animal factors.

3 What does the word ‘adapted’ mean?
A A living thing is well suited to where it lives.
B A living thing is not suited to where it lives.
C A living thing cannot survive on its own.
D A plant that can live on the top of a mountain.

4 What does the word ‘distribution’ mean?
A Where organisms are found in a habitat.
B The total number of organisms living in a habitat.
C The different species that live in a habitat.
D The different tribes that live in a habitat.

5 One of the most important adaptations for organisms living in hot, dry areas is:
A to wash regularly.
B to not waste any water.
C to have thick hair.
D to have sharp claws.

6 Polar bears live in the Arctic. Why is their fur white?
A White is the best colour for keeping cool.
B Otherwise they would get muddled up with brown bears.
C White is the best colour for keeping warm.
D They are not seen easily by animals that they hunt.

7 One way in which fish are adapted to their habitat is:
A they breathe using gills.
B they breathe using air holes.
C they can be caught using a hook and a worm.
D they die of old age or disease.

8 Which of these is a seasonal change?
A It is warmer during the day.
B It is dark at night.
C It is colder in winter.
D A daisy flower opens and closes again.

9 What does the word ‘nocturnal’ mean?
A Things that are cold.
B Animals that go to sleep for the winter.
C Organisms that are active at night.
D Plants that lose their leaves in winter.

10 What does a rabbit do when winter comes?
A It hibernates.
B It migrates.
C It grows thicker fur.
D It dies.

11 A herbivore is:
A an animal that only eats plants.
B an animal that only eats other animals.
C an animal that eats both plants and animals.
D a plant that eats other plants.
14 Plants often turn some of the food they make into another substance for storage.
The name of this substance is:
A glucose.
B starch.
C fibre.
D pasta.
3 Which of these shows the correct word equation for photosynthesis?
A glucose + carbon dioxide →water +oxygen (+ energy)
B glucose (+ energy) →oxygen + glycerol
C water + carbon dioxide (+ energy) →glucose + oxygen
D chlorophyll + carbon dioxide →water + glycogen

15 Leaves are often wide so that they can:
A absorb as much sunlight as possible.
B catch as much rain as possible.
C provide shelter for animals living under them.
D float to the ground when they drop in autumn.

16 Look at these chemical processes. photosynthesis respiration
burning fuels Which of these processes add carbon dioxide to the air?
A respiration and burning
B respiration only
C photosynthesis and respiration
D burning only

17 Plants are important in keeping the
atmosphere in balance because:
A they use up oxygen.
B they use up carbon dioxide.
C they provide food for animals and humans.
D they use water.

18 In human food chains, plants are
important because:
A they are primary consumers.
B they are secondary consumers.
C they are herbivores.
D they are producers.

19 Starch is part of a balanced diet
because:
A it is needed for strong bones and teeth.
B it helps the digestive system remain healthy.
C it is a source of energy.
D it is needed for growth and repair of cells.

20 Which of the following environmentalconditions will not increase the rate of
photosynthesis in a crop plant?
A well-watered soil
B warm weather
C bright sunshine
D windy weather
6 лет назад
Предмет: Французский язык, автор: satylovicmaria67
Помогите с Французским.
6 лет назад
Предмет: Математика, автор: pirovp
вычислите : а)  (0,08*0,17+6,1009)*21,5-130,889                                                                                              б)  0,24*(3000-297,5)+0,07*240         С РЕШЕНИЕМ!       
9 лет назад
Предмет: Литература, автор: Лерочка1761
Помогите пожалуйста!Описать характер Снегурочки не забывая ни её достоинств ни недостатков.
9 лет назад