1.wyjaśnij kiedy należy zastosować schemat cbabc i na czym on polega

Wyjaśnienie:

1.when have you heard of her?

2.what books does she read lately?

3.isn't he drinking wine after lunch?

4.how long ago were you at the barber shop?

5.why isn't your brother applying the job yet?

6.Who didn't understand the last lecture?

7.have we ever met? - Yes,I believe so.

8.Who was in the Edinburgh last month?

9.at what time will they turn up?

10.you look terrible! where on earth were you?

11.when did you go last to the opera?

12.did your lawyer your testimony yet?

13.How many cups of tea you drank yesterday afternoon?

14.did she get her driving license yet?

15.How much did the painting cost last year?

16.Didn't you live here since you were born?

17.Where and when your father was born?

18.Who lent the bankrupt 20.000 pounds two days ago?

19.When does the exam begin?

20.Aren't your parents abroad lately?

21.How did she get into the office building last time

22.Have you read his latest novel yet?

23.Who saw these criminals lately?

24.Since when he became the leader of the choir?

25.for what were these implements used five hundred years ago?

26.With who did he work with last year?

27.from who did she got bunch of flowers today?

28.Which one of you never play snooker?

29.Who's husband did you bring with you tonight?

30.When neighour...zaciełam się i nie wiem

Odpowiedź:

x - cena czapki

x - cena szalika

Jeżeli czapka stanieje o 4% to będzie kosztowała 100% - 4% = 96% ceny x

Jeżeli szalik zdrożeje o 12% to będzie kosztował 100% + 12% = 112% ceny x

Przy początkowej jednakowej cenie 2x + x = 3

Po zmianach cen

96% = 96/100 = 0,96

112% = 112/100 = 1,2

2 * 0,96x +  1,2x = 1,92x + 1,2x = 3,12x

(3,12x - 3x) * 100% = 0,12 * 100% = 12%

Odp: trzeba będzie zapłacić 12% więcej

Odpowiedź:

Wyjaśnienie:Moje zadanko,dostałem co prawda 5- ale masz tam poprawione błędy przez nauczyciela

a)

[tex]\frac{(x+4+x)*5}{2}=20/*2\\ (2x+4)*5=40\\10x+20=40\\10x=20\\x=2[/tex]

b)

[tex]3x-2+x+1+x+1+3x-2+2x = 18\\10x-2=18\\10x=20\\x=2[/tex]

c)

[tex]6(x+1)+\frac{(6+4)*x}{2} =28\\6x+6+\frac{10x}{2} =28\\6x+6+5x=28\\11x=22\\x=2[/tex]