Предмет: Алгебра, автор: kami8181

вычислить, используя формулу а²-b²=(a-b)(a+b).
11*9; 12*8; 13*7; 14*6; 5*15;​

Ответы

Автор ответа: manyny06
6

Ответ:

решение смотри на фотографии

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Предмет: Английский язык, автор: thomasshurak
Виберіть правильну відповідь.
№1. Online services are replacing traditional ones, although the process is taking longer than it (1) to do. These days we can shop, contact friends, organize our holidays and even get rid of an old sofa without (2) our living rooms.
Most of our business and communication nowadays is (3) online, but what we (4) not realize is that there's a downside to this trend. For instance, hundreds of post offices around Britain (5) closed, and it seems that traditional shopping malls might (6) as well due to the increase in online shopping.
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1 a) had predicted / b) was predicted/ c) predicted / d) was predicting
2 a) leave / b) to leave/ c) left / d) leaving
3 a) do / b) to do / c) doing / d) done
4 a) may / b) should/ c) must / d) would
5 a) to be / b) have been/ c) being/ d) been
6 a) to disappear / b) have disappeared / c) disappear / d) disappeared
7 a) a / b) an / c) the / d) one
8 a) got / b) to get / c) getting/ d) will get
9 a) more / b) most / c) lots / d) much
10 a) where / b) who / c) which/ d) what

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Then, there's the whole question of cyber bulying - where people use the sites to spread damaging (6) about someone. That (7) of behaviour is completely unacceptable. Something should really be (8) about this. I know that sites (9) you to block someone who behaves inappropriately, but is this enough? If I was a parent, I would do whatever it took
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5 A besides / B without / C otherwise / D except
6 A rumor / B story / C gossip / D tale
7 A kind / B method / C line / D system
8 A done / B made / C proved / D completed
9 A admit / B approve / C allow / D agree
10 A defence / B shelter / C cover / D safely
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