Предмет: Геометрия, автор: diniska12101981

Знайдіть довжину відрізка AB, якщо А(9;1) B(5;-2). ПЛЗЗ СРОЧНО

Ответы

Автор ответа: viktoriamikhailik
2

Ответ:

5

Объяснение:

AB = (5-9;-2-1) = (-4;-3)

|AB| =

 \sqrt{ {( - 4)  }^{2} }  + ( { - 3)}^{2}  \\

 \sqrt{16 + 9}

 \sqrt{25}

|AB| = 5

думаю поймеш

Похожие вопросы
Предмет: Английский язык, автор: karywa1797karywa1797
Граматика: Present Simple and Present Progressive tense.
A)
1.Maria ________ (work) for a TV station.
2. At the moment she ________ (travel) in the Sahara Desert.
3.Dan ___________ (love) wild animals.
4. He ___________( not visit) Alaska at the moment.
5.Marta __________ (not live) in Africa.
6.She ___________(stay) in Africa at the moment.
7.Dad usually ______ (cook) dinner.
8.My parents ________ (go) to Italy every year.
9. My sister _________ (walk) to school every day.
10. We _______ (have) lunch now.
11.I never ________ (stay in) on Saturday evening.
12. I _____ (go) to the cinema now.
13. My mum _____ (not work) today.
14.Peter _______ (not like) rap music.
15.He _______ (listen) to pop music at the moment.
16. Donna usually ________ (go) shopping on Saturdays.
17.Let's go out. It ________ ( not rain) now.
18. Hurry up! Everybody ______ (wait) for you!
19. The sun __________ (rise) in the east.
20. Water __________ (boil) at 100 degrees.
21. The water________ (boil). Can you turn it off?
22.I must go now. It _______ (get) late.
23.I usually _______ (go) to work by car.
24.It ___________ ( not rain) very much in the summer.
25.The moon ______ (go) round the earth.


B)

1.Who is that man? What ______ he ______(want)?
2.Who is that man? Why ______ he ______( look) at us?
3. ______you _______(believe) in God?
4.Gilbert says he is 80, but nobody ______(believe) him.
5.Every Monday Maite _______(drive) her kids to football practice.
6. Be quiet. Arturo _________ (sleep).
7. Don't forget to take your umbrella. It _______(rain).
8.I don't like living in England. It always______ (rain).
9. Look! It _____ (snow). We are going to have a white Christmas.
10. Maila ______ (watch) TV every morning.
11. I have to go now. It ______ ( get) dark
12.Right now I ____ (spend) time with my father.
13. We usually ______(go) to the gym on Mondays.
14.She _______ (talk) to Pete at the moment.
15. He ______ (look) good in jeans.
16. She ______ (wear) a dress today.
17. We _______ (drive) on the left in England.
18. I _______ (not want ) to go to the Cinema.
19.We______ (go) dancing every weekend.
20. I _______ (take) a pill every day.
21. He ______ (speak) Dutch and Italian.
22. We always _____ (stay) at the Village.
23. I ______ (need) to see the doctor.
24. Ray _____ (drink) very much coffee.
25. I _______ ( not feel) very well.