Предмет: Математика, автор: aksana30

№ 867 6 класс Муравин
общая масса трёх кусков гранита равна 156 кг.кусок серого гранита тяжелее куска красного на 18 кг,а кусок красного гранита легче белого на 15 кг.найдите массу куска красного гранита

Ответы

Автор ответа: lovevred2016

серый х+18
красный х
белый х+15

х+18+х+х+15=156
3х+18+15=156
3х=156-33
3х=123
х=123:3
х=41красный
41+18=59 серый
41+15=56 белый

Автор ответа: aksana30

спасибо огромное)

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Раскройте скобки, поставив глагол в нужную видовременную форму:
1. He (read ) ＿＿ a lot about England before.

2. How many languagés (speak) ＿in Russia?

3. I (not receive) ＿a letter from Mary since Christmas.

4. I don't know when he (arrive) ＿ tomorrow. It depends on the weather.

5. I found that letter while I (look ) ＿ for a book.

6. If everything (go) well, I'll be able to see you next week.

7. Last year we often (invite)__ to their parties.

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=== === === === === === === === === === === === === ===
Обведите правильный вариант ответа кружком:
1. They had a villa near the beath?
a) hadn't they
b) had they
c) didn't they
d) did they have

2.＿late, your children should go to bed
a) There is
b) It was
c)There was
d) It is

3. There aren't new hotels in our town.
a) some of
b) no
c) much
d) any

4. There are some little on the floor.
a) mouses
b) mouse
c) mice
d) mices

5. It usually much in Britain in winter.
a) not snows
b) doesn't snow
c) isn't snowing
d) isn't snow
d) did they have

6. Today you are reading than yesterday.
a) worse
b) bad
c) more bad
d) the worst

7. Now we are going to open our presents and then we shall look at__.
a) their
b) theirs
c) her
d) it

8.__ a new TV set in our cottage.
a) There is
b) It is
c) It was
d) There being

9. He drinks __ coffee and smokes __ cigarettes.
a) many, much
b) little, much
c) much, a little
d) much, many

10. Who ＿ ?
a) did you laugh
b)you laughed at
c) laughed at you
d) at you laughs