Предмет: Алгебра, автор: dameshmuratova

xy=600
x+y=70
Помогите решить!

Ответы

Автор ответа: tlegenova0117

0

х+у=70
х=70-у
х=70-у ,у=р

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1.Choose the correct item.
We rarely _________ each other.
is seeing
are seeing
see
sees
2.Choose the correct item.
I’ve never heard this word. How _________ it?
does you pronounce
are you pronouncing
do you pronounce
you pronounce
3.Choose the correct item.
I _________ on Nick’s sofa now until I find a place of my own.
do sleep
sleep
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_________ hungry. Let’s go and eat something.
I getting
I aren’t getting
I get
I am getting
5.Choose the correct item.
I only _________ there for a couple of months - I’m going abroad in the summer.
’s working
work
works
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He _________ my money!
is always borrowing
is always borrow
always borrow
always borrows
7.Choose the correct item.
You _________ goulash with meat, vegetables and paprika.
make
doesn’t make
makes
are making
8.Choose the correct item.
So, in the first scene, we _________ him getting up. Then he _________ and _________ a strange woman.
see / go out / meet
see / goes out / meets
see / is going / is meeting
are seeing / is going out / is meeting
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Diane’s father _________ that restaurant over there.
doesn't owns
is owning
own
owns
10.Choose the correct item.
My sister _________ patiently for her exam results now.
waits
wait
is waiting
is wait
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If you _________ to the radio, why don’t you switch it off?
aren’t listening
listening
doesn’t listen
don’t listen
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His only bad habit is that he _________ too loudly.
talk
isn’t talking
talks
does talk
13.Choose the correct item.
We _________ by train very often.
doesn't travel
do not travel
not to travel
aren’t traveling
14.Choose the correct item.
What _________ at weekends?
you usually do
are you usually doing
are you usually do
do you usually do
15.Choose the correct item.
_________ at 100 degrees Celsius?
Does water boil
Does water boils
Water boils
Is water boiling
16.Choose the correct item.
Why are all these people here? What _________ ?
is happening
does happen
happen
are happening
17.Choose the correct item.
The film _________ with a dramatic car chase.
doesn’t ends
is ending
ends
end
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Rachel is in New York right now. She _________ at the Park Hotel.
doesn’t stays
isn’t stay
stay
is staying
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Most people _________ to swim when they are children.
is learning
learn
are learning
don’t learns
20.Choose the correct item.
Listen to those people. What language _________ ?
are they speaking
do they speaking
does they speak
do they speak

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