Предмет: Математика, автор: grebenevaalexsandra

Решите уравнение:

а) 10х = 2; б) 2,5 – х = 1.

Ответы

Автор ответа: vmaluga2011
0
а)
10х=2
х=2:10
х=1/5

б)
2,5-х=1
х=2,5-1
х=1,5
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Геометрия, автор: ooo203
Найдите угол между касательной RT и хордой ST, проведенным из точки касания, если дуга ST равна 122°, а точка O - центр окружности.
7 лет назад
Предмет: Алгебра, автор: Kristina352611287
Срочно нужно пожалуйста
7 лет назад
Предмет: Английский язык, автор: tolkynkrman05
1)What is ... month of the year?
a)shorter
b)longer
c)the shortest
d)short
2)Please,come__my party__Saturday?
a)in/to
b)for/at
c)by/on
d)to/on
3)Llok at ... tress.
a)such
b) these
c) this
d)that
4)These doors are locked. Don't try to open__
a)they
b)them
c)their
d)it
5)Last year we__ the States.
a)used visiting
b)have visited
c)visited
d)had visited
6)The house was constructed in the____century
a)nineteenth
b)ninety
c)nineteen
d)nineties
7)There ... much water in the bottle.
a) are
b) am
c)were
d)is
8) ... it Tuesday today?
a)is
b)Do
C)Are
d) Did
9)Take .. apples and give them to your friend.
a)that
b)those
c)this
10)There ... little sugar in the bowl.
a)is
b)were
c)are
d)am
11)There ... many children in the swimming pool.
a)were
b)am
c)is
d)was
11)There ... many children in the swimming pool.
a)were
b)am
с)IS
d)was
12) __gets up very early.
а)they
b)I
c)she
d)we
13)Is that my key, or is it____?
a) yours
b)the yours
C)the your's
d)your
14)What is ... name?-Sue
a)their
b)her
c)our
d)his
15)John __ smoking.
a)have hated
b)hates
c)is hating
d)has hated
16)____ you speak any foreign languages?
a)may
b)must
c)could
d)can
17)I __ get up early tomorrow,because my train leaves at 7:30.
a)must
b)have to
c)need
d)might
18)Who is that girl.She ... Ann
a)-
b)is
c)am
d)do
19)Who ... America?
a)did discover
b)did discovered
c)discovers
d)discovered
20)generous, greedy, I, person, am, or
a) I am generous or greedy person?
b) Generous am I or greedy person?
c) I am person generous or greedy?
d)Am I generous or greedy person?
21)Find the right variant "14/10"
a)the fourteenth of October
b)the October and fourteen
c)the fourteenth of October
d)the fourteen of October
22)This novel is...than that one.
a)more interesting
b)the most interesting
c)interesting
d)less interesting
23)Susan has to work very hard. I____do her job, I'm sure.
a)couldn't
b)shouldn't
c)don't
d)can't
24)Thirty-eight plus twenty-eight is___
a)fifty-six
b)sixty-four
c) sixty-six
d)sixty-eight
25)We___see the lake from our bedroom window.
a)are able
b)must
c)might
d)can
26)Make the word with these letters: t, h, e, r, a, e, b
a)breathe
b)heatreb
C)reathre
d)theabre
27)Fifty minus thirty-one is__
a) nineteen
b)nine
c)seven
d) eighteen
28)My friend __the answer to the question.
a)know
b)knowing
c)is know
d)knows
29)I've __ made some coffee. It's in the kitchen.
a)never
b) just
c) yet
d)ever
30)-What time is it?
-It's__.
a)eight oh nine o'clock
b)eight thirty fast
c)ten minutes slow
d)nine minutes past eight
31)Date: September 30?
a)The thirtieth of September
b) The thirtieth of September
C)Thirty of September
d)The thirteenth of September
32)There are __ days in a year.
a)three hundred and sixty-five
b)three thousand and sixty
C)three hundred and sixty-six
d)hundred and sixty-six
33)Find the opposite meaning of the word "noisy"
a)exciting
b)calmly
c)quitly
d) quiet
34)Choose the cardinal numeral
a)the first
b)the fifth
c)thirteen
d)the sixth
35)Did you buy (tomato) yesterday?
a) tomatoes
b)tomats
c)tomatos
d)tomatoz

​
7 лет назад
Предмет: Химия, автор: volann98
получите все возможные (кислую, основную и среднюю) соли при взаимодействии кислоты и основания: h2feo4 ca(oh)2
10 лет назад
Предмет: Геометрия, автор: fill5
одна из сторон параллелограмма на 6см больше за вторую , а его периметр =48 см . найти стороны параллелограмма
10 лет назад