Предмет: Геометрия, автор: abdievagulsara10

Дано: ΔACB,BC=AC.
Основание треугольника на 200 мм меньше боковой стороны.
Периметр треугольника ACB равен 2200 мм. Вычисли стороны треугольника.

BA=


BC=


AC=

Это очень срочно не хочу получить 2 ку пожалуйста помогите

Ответы

Автор ответа: Аноним
29

Если боковая сторона х /мм/, то основание ВА равнобедренного треугольника АВС равно   (х-200) /мм/

Периметр - это сумма длин всех сторон треугольника. Составим и решим уравнение.

х+х+(х-200)=2200,

3х-200=2200

3х=2400

х=2400:3;  х=800, значит, ВС = АС =800 мм, тогда ВА = 800-200=600/мм/

Ответ ВА =600 мм

            ВС = 800 мм

            АС = 800 мм

Удачи!


shoira8888: только недавно скачала приложение
shoira8888: мне 12 скоро будет 1у
shoira8888: 13*
shoira8888: как мне вас поблагодорить?
shoira8888: если я незнаю где расположены "звездочки"
Аноним: Видите, спасибо. С сердечком красным. ЭТО Вы поставили? Спасибо и Вам. А слева от него пять черных звездочек, вот если Вы на них нажмете, то и появится Ваша оценка.
shoira8888: а вы на компе?
Аноним: Нет, я в самолете. Уже взлетаю. До свидания.
shoira8888: а ну тогда у меня не выйдет, потому что я на телефоне
shoira8888: удачного полёта
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Прочитайте текст и выполните два задания в тестовом режиме.

Economy wasted trip



An Englishman who was in France wanted to go back to England by sea. But he

had very little money. He had so little money that he could pay only for the ticket. As he

knew that the trip would last only two days, he decided not to eat during these days.

As he took a ticket and got on the ship the next morning, he tried not to hear the

bell for breakfast. When dinner time came, he was very hungry; but he didn’t go to the

dining-room. In the evening he was still more hungry, but when the waiter came to

invite him to have supper, the Englishman said that he was ill.

The next day the Englishman was half-dead and couldn’t stand the hunger any

longer. “I shall go and eat even if they kick me out into the sea”, said he to himself. So

he went to the ship dining-room and had his dinner. In the evening he had supper but

was very much afraid of his future because he didn’t pay for the meals. At last he

addressed the waiter and said: “Bring me the bill, please”. – “What bill?” asked the

waiter. – “For the supper and dinner I had in your dining-room”. – “Don’t trouble, Sir.

You paid for your meals when you bought the ticket”.

I. Choose the correct variant (a,b or c).

1) The Englishman wanted to go back to England...

a. by air

b. by sea

c. by car

2) The Englishman decided not to go to the dining-room because...

a. he wasn’t hungry

b. he cooked meals himself

c. he had no money to pay for meals

3) When the waiter came to invite him to have supper...

a. the Englishman said that he was ill

b. the Englishman pretended that he was sleeping

c. the Englishman didn’t answer

4) The Englishman was afraid of his future because…

a. the meals were bad

b. he didn’t pay for the meals

c. the storm had begun

II. Mark the statements: True or False.

1. The Englishman had very little money. _____

2. The Englishman wasn’t hungry during the journey. ______

3. The next day the Englishman went to the dining-room to have dinner. ______

4. The Englishman had to pay for the meals. ______