Предмет: Математика, автор: dimahrebtov

найдите значение выражения 4 ac^2 / a^2 - b^2 * a+c / ac при a=3,1 ; c=3,6

Ответы

Автор ответа: amina254

0

4 ac²/ a² - с²*a+c / ac=4с/(а-с)(а+с) *а+с=4с/а-с=4*3,6/3,6-3,1=14,4/0,5=14,4*2=28,8

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Английский язык, автор: Ytan55

In some families children watch too much television – four or five hours every day. Not all the programmes they watch are good for young viewers.
For example, a programme may have cruel scenes where people attack each other violently, use rude language and behave shamely. Specialists say that children often copy what they see. That is why those who watch fights on television have a tendency to be more aggressive.
At the same time cruelty and violence are part of our life. Maybe it is better for children to know about them?
One thing is clear: programmes that show aggression must be discussed with parents or watched together with them. Such discussions can let parents explain to their children how to behave in threatening situations and the young ones will feel more protected.
1/Подбери заголовок для текста.
a) Young children and cruel television programmes.
b) Fights on television.
c) Children and their parents watch TV together.
2/. Выбери ответ на вопрос:
What programmes are good for children?
a) programmes that may have cruel scenes.
b) not all the programmes
c) some programmes that parents like
3/.Какое предложение выражает главную мысль текста:
a) Not all the programmes that children watch are good for them.
b) Young children should watch television with their parents.
c) Maybe it is better for children to watch too much television.
4/. Определи позицию автора текста:
a) There is an aggression everywhere.
b) Children copy what they see.
c) Watching too much television is bad for children.
5/. Закончи предложение, используя текст:
One thing is clear:
a) children watch TV 4 or 5 hours every day.
b) violence is a part of our life.
c) TV programmes that show aggression must be discussed with parents.

даю 20 баллов срочно!!!!

6 лет назад

Предмет: Алгебра, автор: finist721

Известно что а<b<0 выберите наименьшее из чисел

6 лет назад

Предмет: Математика, автор: adela1140612

9. Измерь стороны фигур, найди их периметр и площадь.

6 лет назад

Предмет: Математика, автор: Аноним

в двух одинаковых спальных вагонах поезда 120 мест Сколько мест в 7 таких вагонах в 10 таких вагонах

9 лет назад

Предмет: История, автор: учени999

основные положения зароастризма

9 лет назад