Предмет: Геометрия, автор: Аноним

Помогите пожалуйста с полным решением

Приложения:

Ответы

Автор ответа: zmeura1204

0

Ответ:

КС=3см

ВС=12см

Объяснение:

∆МВК~∆АВС, по углам

МВ/АВ=ВК/ВС

КС=х; ВС=ВК+КС=(9+х)

12/(12+4)=9/(9+х)

12/16=9/(9+х)

3/4=9/(9+х)

3(9+х)=4*9

27+3х=36

3х=36-27

3х=9

х=9/3

х=3см КС

ВС=9+3=12см

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: История, автор: Alena2373

1. Продовжить речення:
1 Нова Січ, або
2. Місце заслання останнього кошового отамана Запорозької Січі
3. Останній кошовий отаман Запорозької Січі
4. Адміністративно-територіальна
одиниця на Січі
5. Місце переселення останніх запорозьких козаків
6. Найвищий законодавчий орган на Січі
7. Царський генерал, який за наказом Катерини II зруйнував січ
8. Символ влади військової старшини

1 год назад

Предмет: Экономика, автор: shaxzod74

Сочинение по теме; Что такое экономика как наука

1 год назад

Предмет: Английский язык, автор: winden100397

1) In some of these sentences, must is wrong or unnatural. Correct the sentences where necessary.

1. What must i do to get a new driving licence?

2. Mark is really nice person. You ... meet him.

3. I might have to work late tomorrow evening

4. You must write your answers in ink.

5. Applications for the job have to be received by 18 May.

6. I must work from 8 till 7.

7. I havent spoken to Sue for ages I ... phone her.

2) Comlete the sentences with mustnt,neednt or dont / doesnt have to.

1. We ... hurry. We have a lot of time.

2. Gery gave me a letter I ... forget to post it.

3. This is a valuable book. You ... lose it.

4. Im not so busy. I have a few things to do, but i ... do them now.

5. A man was injured in the accident, but he ... go to hospital because it wasnt serious.

6. Everything will be OK. You ... worry.

3) Complete the sentences using can or (be) able to. Make negative sentences where it's necessary.

1. I looked everywhere for the book, but I ... find it.

2. I wanted to buy some tomatoes. The first shop I went to didn't have any, but I...

get some in the next shop.

3. I'd like to ... speak Chinese.

4. I've never .... drive a car.

5. -Did you have difficulty finding our house? - Not really. Your directions were

good and we ... find it.

6. -Did the thief get away? - Yes. No-one realised what was happening and the

thief ... get away.

7. Mike and Pete played tennis yesterday. Pete played very well, but Mike... beat him.

1 год назад

Предмет: Английский язык, автор: vikadendebera

Заполните пропуски was,was not,were,were not.1Where..........Tony last Sanday?2 We ............ at home yesterday , we went to London?3There......... a lot of people at the cinema.4 Were you at school yesterday?-No ,I........

6 лет назад

Предмет: Литература, автор: andrejmajstrenko03

Що сымволизують крыла у твори "Чайка Джонатан Ливинстоуна"

6 лет назад