Предмет: Математика, автор: Karina3OO

\frac{ {b}^{2} - 25}{4 {b}^{2} + 20b} \: \: при b = - 0,2
​

Приложения:

Ответы

Автор ответа: isaevaelenka
0

Ответ:

6.5

Пошаговое объяснение:

((b+5)(b/5))/(4b(b+5))=(b-5)/4b

(-0.2-5)/(4*(-0.2))=-5.2/-0.8=5.2/0.8=6.5

Автор ответа: sangers1959
0

Ответ:

Пошаговое объяснение:

(b²-25)/(4b²+20b)=(b+5)(b-5)/(4b*(b+5))=(b-5)/4b=(-0,2-5)/(4*(-0,2))=

=-5,2/(-0,8)=6,5.

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: Kostya010901

перевести на английский язык - я позвоню ему через час.
1 год назад
Предмет: Английский язык, автор: svtl111

                      Прочитай текст. Определи, какие из нижеприведенных утверждений соответствуют содержанию текста (1- True), какие не соответствуют (2-False)  и  о чем в тексте не сказано, то есть на основании текста нельзя дать ни положительного ответа ни отрицательного (3- Not stated). Обведите номер выбранного вами варианта.

 

 

 

 

In March 1992 a man living in Newtown near Boston Massachusetts received a bill for his as yet unused credit card starting that he owed $0.00. He ignored it and threw it away. In April he received another and threw that one away too. The following month the credit card company sent him a very nasty note stating they were going to cancel his card if he didn’t send them $0.00 by return of post. He called them, talked to them, they said it was a computer error and told him they’d take care of it.

However he got a bill for $0.00 stating that he had 10 days to pay his account or the company would have to take steps to recover the debt.

The next month, giving in, he thought he would play the company at their own game and mailed them a check for $0.00. The computer processed his account and returned a statement to the effect that he now owed the credit card company nothing at all.

A week later, the man’s bank called him asking him what he was doing writing a check for $0.00. After a lengthy explanation the bank replied that the $0.00 check had caused their check processing software to fail.

The bank could not process ANY checks from ANY of their customers that day because the check for $0.00 had caused the computer to crash.

Finally the man, who had wanted to buy his wife a computer for her birthday, bought her a typewriter instead. 

 

The man, who had wanted to buy his wife a computer for her birthday, bought her a typewriter instead. A week later, the man’s bank called him asking him what he was doing writing a check for $1000000.00. In April 23rd the man received another bill and threw that one away too. The bank could process ANY checks from ANY of their customers that day because company had bought a new computer. The following month the credit card company sent the man a very pleasant note stating they were going to pay him $1000000.00.

the $0.00 check had caused their check processing software to fail.

The $0.00 check had caused company’s check processing software to fail.

 

B. 1

a) True

b) False

c) Not stated

 

B. 2

a) False

b) Not stated

c) True

 

B. 3

a) False

b) True

c) Not stated

 

B. 4

a) Not stated

b) False

c) True

 

B. 5

a) True

b) Not stated

c) False

 

B. 6

a) Not stated

b) True

c) False

 
1 год назад
Предмет: Английский язык, автор: svtl111

                                     Заполни пропуски словами по смыслу

 

A. 8.  My computer has got some bugs and often… .

A. 9.   Professional athletes need to be … in food and entertainment.

A. 10. He seriously … his knee while climbing the rock.

A. 11. Through this practice, … acquire a strong spirit of strength and tenacity.

A. 12. The packaging is … and so is the product.

A. 13. The … hardware allowed to use new multimedia program.

 

A. 8

a) virus

b) to access

c) crashes

d) database

 

A. 9

a) compete

b) injure

c) coach

d) moderate

 

A. 10

a) inspiration

b) injured

c) role model

d) indulge

 

A. 11

a) risk takers

b) think twice

c) go to extremes

d) desire

 

A. 12

a) dates back

b) update

c) outdated

d) date

 

A. 13

a) outdating

b) dated back

c) date

d) update

 
1 год назад
Предмет: Математика, автор: Космос228
периметр прямоугольника равен 6 м 8 дм,одна из его сторон на 1дм 6 см меньше соседней стороны.Найдите площадь прямоугольника.
8 лет назад
Предмет: Физика, автор: D1m1tr1
Как найти сопротивление в параллельной соединенной цепи R1,R2,R3,Rобщ. Силу тока I. И мощность P3, если дано напряжение Uвх,U1. Мощность P1,P2. P.S. Только формулы как найти.
8 лет назад