Предмет: Алгебра, автор: dakota20

При каком значении уравнения
(c - 8) x = - 7
a) не имеет корней
б) имеет корень равный 4 ​

Ответы

Автор ответа: Аноним
1

а) При c - 8 =0 откуда c = 8 уравнение не имеет корней.

б) Подставляя корень x = 4 в уравнение, получим

4(c-8) = 7

4c - 32 = 7

4c = 39

c = 39/4

nataliiaevtushoz5x3b: б) не верно
nataliiaevtushoz5x3b: Если корень Х = 4, тогда Х = 16
nataliiaevtushoz5x3b: И получаем
16(с -8) = 7
16с - 128 = 7
16с = 135
с = 8,4375
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Read the text. Choose the correct answers.
Do you want to be on TV or in a film? Well, if you do, then why not become an extra? Extras play a very small part in a film or TV programme. They don’t usually speak. However, they may have to walk across the set or stand with other extras as part of a crowd.
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So imagine you get a call to say a director wants you in their next film. You’re really excited, but what happens next? Well, don’t be anxious about how you’ll look on screen, as the company will do lots of work on you when you arrive on the set. You might have to wear your own clothes, but don’t worry about your hair and make-up as there will be staff to make you look perfect for the role.
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Most extras can earn about £90 to £110 a day. This isn’t very good for the number of hours that you need to be available, but for the actual work that you do, it’s OK. However, people usually become an extra for the chance to be on the big screen rather than for the money. Some people hope that it may lead to a real acting part. This doesn’t happen very often, but there are some stories of extras becoming famous because a director saw them on a film set. However, even if you continue to just be an extra, you might get to see one of your favourite Hollywood actors one day, and it will definitely be something to tell all your friends about!
What is the best title for the article?
What to expect as a film and TV extra
My life as a film and TV extra
From TV extra to film star
The writer suggests taking a book so that
you look more serious.
you have some entertainment.
you can learn about the film.
The writer suggests that you will get an ‘extra’ job if
you have the right clothes.
you are in the right place.
your appearance is right.
4. The writer thinks you’re more likely to get a part in a film if
you think carefully about how you look in your photos.
you wear a lot of make-up.
you change your appearance for each part you want.
5. The writer says that if you get a part, you may need to
1. do something with your hair.
2. find something to wear.
3. practise doing your make-up.
6. What does the writer think is a benefit of being an extra?
1. You can meet famous actors.
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It is very popular with actors.
It can be a bit boring.
It is always well paid.

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