Предмет:
МатематикаАвтор:
аноним2,4 : 3 = (4 * х) : 8;
запишем уравнение так, чтобы выражение с переменной было в левой части уравнения, а без переменной - в правой
(4 * х) : 8 = 2,4 : 3;
вычислим значение выражения в правой части уравнения
(4 * х) : 8 = 0,8;
чтобы найти неизвестное делимое (4 * х), можно частное 0,8 умножить на делитель 8
4 * х = 0,8 * 8;
вычислим значение выражения в правой части уравнения
4 * х = 6,4;
чтобы найти неизвестный множитель х, можно произведение 6, 4 разделить на множитель 4
х = 6,4 : 4;
х = 1,6
Ответ: {1,6}
Автор:
camillehansenДобавить свой ответ
ТЕСТ
1 John ______________ to work every day.
a) do b) don't go c) doesn't go d) is going
2 We __________________ dinner now.
a) are having b) have c) don't have d) having
3 They _______________the match yesterday.
a) have won b) won c) win d) wined
4 He __________________ breakfast yesterday.
a) hadn't b) no had c) didn't have got d) didn't have
5 It is ________________ of October today.
a) twenty one b) twenty first c) the twenty one d) the twenty first
6 I haven't got _____________ .
a) no money b) money c) any money d) some money
7 Pete ________ to a ballet last Saturday.
a)
invite
b) is invited c) was invited d) was invite
8 Tennis _______ in summer.
a) is played
b) plays
c) is playing d) played
9 John is the manager, you need to speak to ________ .
a) it b) him c) her d) his
10 There are ___________ books.
a) their b) them c) there d) this
11 What are _______________ women over there talking about?
a) these b) those c) this d) that
12 My father is _____ driver.
a)
-
b) a
c) the d) an
13 He goes to work ____________ taxi.
a) by b) on c) with d) in
14 I don't work ____________ Mondays.
a) on b) in c) at d) by
15 He arrived _______________ airport just in time.
a) in b) at c) on d) by
16 Simon __________________ in Madrid since 1982
a) lives b) is living c) does live d) has lived
17 My father is _____ driver.
b)
-
b) a
c) the d) an
18 ___________ is it from Barselona to Madrid?
a) How far b) How often c) How much d) How many
19 The kitchen can't be dirty, he ______________ it.
a) is just clean b) have just cleaned c) just clean d) has just cleaned
20 I haven't seen him ____________________ we left school.
a) since b) when c) for d) how
21 If you want to keep fit, you _____________ go to the gym.
a) must b) might c) have to d) should
22 Anyone _______________ make a mistake.
a) can b) should c) has to d) must
23 You ______________ beat children.
a) shouldn't b) mustn't c) don't have to d) needn't
24 This is ____________ picture I've ever seen.
a) most beautiful b) the beautifullest c) the most beautiful d) more beautiful
25 The weather is getting ___________.
a) wors b) worse c) badly d) more bad
26 I usually have _____ cup of coffee for ________ breakfast.
a) a, a b) a, the c) -, - d) a, -
27 We are having a party __________ the weekend.
a) on b) at c) in d) during
28 I ___________ to work when I ____________ Jim.
a) went, have met b) was going, was meeting c) was going, met d) went, was
meeting
29 They _____________ you.
a) just called b) have just called c) were just calling d) has just called
30 Many houses _______________ in our city every year.
a) are built b) built c) was built d) have been built
31 If I ____________ you, I'd take the risk.
a) am b) have been c) were d) would be
32 She ______________ go to the dentist’s yesterday.
a) must b) had to c) ought to d) sould have
33 On our way to _______ USA we flew over _________ Atlantic Ocean.
a) a, the b) -,- c) the, the d) the, -
34 I live in ________ Moscow.
a) a b) the c) - d) a/the
35 I go to school _________ foot.
a) by b) on c) in d) of
36 Sometime I go to work ______ taxi.
a) with b) on c) by d) in
37 If it ______________ sunny tomorrow, we will go get a tan.
a) is b) was c) had been d) will be
38 She said she ________________ for the lesson. - Она сказала, что
подготовилась к уроку.
a) had prepared b) prepared c) will prepare d) was preparing
39 He says that he __________ busy. - Он говорит, что занят.
a) was b) had been c) is d) wiil be
40 Everyone knew that the conference ___________ next Monday.
a) to start b) will start c) would start d) started
41 Don’t speak to ______.
a)
he
b) him
c) his d) hi
42
This film is interesting . _____is an American one.
a)
He
b) They
c) It d) She
43
They _____ in London now.
a)
were
b) are
c) is d) was
44
Where ______ you from?
a)
are
b) is
c) was d) am
45
Bill and Tom sometimes _______ to the country.
a)
goes
b) go c) have gone d) gos
46
My sister ______ dance very well.
a)
must
b) may
c) can d) should
47
I _______to go there tomorrow.
a)
must
b) may
c) will be able d) has to
48
Pete is ________ than Nick.
a)
tall
b) taller
c) the tallest d)
49
Who is the ________ student in your group?
a)
clever
b) cleverer
c) cleverest d) more cleverer
50
Ann speaks English _____ than Jane.
a)
gooder
b) better
c) more good d) best
51
He _____ in Paris two years ago.
a)
is
b) was
c) will be d) were
52
I ______ to our director at 10 o’clock yesterday.
a)
speak
b) have spoken
c) spoke d) speaks
53
The students ____ already ______ a test.
a)
will…write b) have…written c) are…writing d) has….written
54
___ sky is blue.
a)
-
b) a
c) the d) an
55
She is ___my sister.
a)
-
b) a
c) the d) an
56
She said, “I haven’t seen your brother.”
a) She said she hasn’t seen your brother. b) She said she hasn’t seen her brother.
c) She said she hasn’t seen my brother. d) She said she hadn’t seen my brother.
57
The teacher said to the boy, “Your answer is very good.”
a)
The teacher said to the boy his answer is very good. b) The teacher said to the boy
his answer was very good. c) The teacher said to the boy my answer was very good. d)
The teacher said to the boy your answer was very good.
58
a) She a book bought to me. b) A book she bought to me. c) Me she bought a book.
d) She bought me a book.
59
a) Mary can dance well? b) Mary dance can well? c) Can Mary dance well? d)
Can Mary well dance?
60
a) Mary can dance well. b) Mary dance can well. c) Can Mary dance well. d)
Can Mary well dance.
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