Найти сумму корней уравнения - Дата: 17.10.2019, Автор: simoneok3h - №18992565

Найти сумму корней уравнения
- Предмет:
  Алгебра
- Автор:
  simoneok3h
- 6 лет назад

Ответы 1

дискриминант равен 225-4*2*7=225-56=169х1=-15+√169=-15+13=-2х2=-15-13=-28сумма -2+(-28)=-30
- Автор:
  shawn544
- 6 лет назад
- 0
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AMERICAN CHARACTER
American society seems to be much more informal
than the British and, in some ways, is characterised by
less social distinction. Students do not rise when a teacher
enters the room. One does not always address a person
by his title, such as «Major» or «General» or «Doctor».
The respectful «Sir» is not always used in the northern
and western parts of the country.
However, it is best to use a person's title when first
meeting him/her, and then allow the person to tell you
how he/she wishes to be called.
They use first names when calling each other, slap on
the back, joke and are much freer in their speech, which
is more slangy than the conventional British English.
You will often hear the word «Hi» (a form of greeting
among friends) used instead of the usual «Hello», and
«Howdy* instead of «How do you do?*.
Yet, in spite of all the informality, Americans, even
in the way they address each other, show consciousness
of social distinction. For example, one is likely to use
somewhat more formal language when talking to superiors. While the informal «Hello» is an acceptable greeting from employee to employer, the employee is more
apt to say «Hello, Mr. Ferguson*, while the employer
may reply «Hello, Jim*
Certain other forms of politeness are observed on social occasions. Women may wear hats in church, in restaurants, and often when attending luncheons in public
places and other public social functions expect those that
take place in the evening. Men who do wear hats ordinarily remove them in elevators, churches, restaurants,
private homes, business offices — in fact, in most public
situations when they wish to show respect.
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