Ответ по предмету Математика: знайдіть допустимі значення змінної у виразах: а) m²+7m б) 3a-5/ a-2 в) 7b+9/ 8 г) p+2/ p²- 1

Предмет: Математика, автор: uppihouse

Если радиус малой окружности 4 см, а большой 8 см, то найдите площадь закрашенной части.

2 года назад

Предмет: Математика, автор: morozjulia77

-5/7*6 1/3- 5/7*2/3 допоможіть з розв'язком дякую

2 года назад

Предмет: Английский язык, автор: qwerty13246j

Помогите пожалуйста с английским!
Task 1 Read the letter of complaint below and find out what 4 things the author complains about.

Dear Ms Hay

I am writing to complain about some problems with the summer course, which we have recently attended at the Coral University.

We booked 25 places for the summer school Economics course at your university. The bill has just arrived, but I am afraid there is a mistake in it. You have overcharged us, because your bill is for $23,500, which is not a correct price for the course, because we have already paid a deposit of $430 per person. In addition, the course was 175 hours long instead of 200, so there should be a reduction of 12.5%. Please, send us a corrected bill.

Meanwhile, we would like you to know that the facilities were not of a high standard. Firstly, the classrooms seemed to have no air conditioning and they were of poor quality. Secondly, they were a long way from the main campus facilities. All in all, we are dissatisfied with the standard of service that the university provided.

Yours sincerely

Yaxi

Task 2 Using necessary phrases from the list below, write a reply to this complaint.

I am terribly sorry to hear about...

I would like to apologize for...

I am afraid we....

I will be investigating why.......

In the meantime, I have arranged for....

We would like to offer you....

I hope you will accept...

I am afraid this was because of...

Once again, please accept our sincere apologies....

2 года назад

Предмет: Математика, автор: Bogdana367

1,4-0,6(2х-3)=5(0,3х+13,6)

8 лет назад

Предмет: Английский язык, автор: Englishsh

26 I can’t hear you – it’s ........ noisy in here.
a too
b too much
c too many

27 Jamal has just sent me ........ to arrange plans for this weekend.
a a blog
b an email
c a website

28 I promise I’ll call you as soon as I ........ .
a I arrive
b I arrived
c I’ll arrive

29 Photographers and designers need to be very ........ .
a creative
b fit
c annoying

30 The global financial crisis, ........ is forcing lots of small businesses to close, does not look set to end soon.
a it
b that
c which
31 There ........ a terrible accident if the pilot hadn’t reacted so quickly.
a had been
b was
c would have been

32 “Are you ready to order?”
“Not yet – I’m still looking at the ........ .”
a bill
b menu
c service
33 “My job is never boring.”
The speaker’s job is always ........ .
a interesting
b popular
c difficult

34 I’ve been working here ........ about the last two years.
a during
b for
c since

35 “It leaves from Platform 2 at 4.15.”
The speaker is talking about ........ .
a an airline flight
b a train
c a taxi

36 I went to a lovely ........ last Saturday.
The bride was my best friend when we were at school.
a anniversary
b marriage
c wedding

37 “I’ve got a headache.”
“Maybe you ........ to take an aspirin.”
a should
b ought
c don’t

38 The patient had an ........ to insert metal pins in his broken leg.
a injection
b operation
c X-ray

39 She won a seat in parliament at the last ........ .
a general election
b opinion poll
c referendum

40 I’m surprised you didn’t get upset. If someone said that to me, ........ really angry.
a I’m
b I was
c I’d be

41 This used to be ........ part of the city, but since the old buildings were renovated it’s become a very fashionable area.
a an affluent
b a run-down
c a trendy

42 Cassie went to bed early because she was ........ .
a tired
b stressed
c relaxed

43 In the 1960s, computers were ........ expensive that ordinary people couldn’t afford them.
a so
b such
c too

44 Do you want ........ the match tonight?
a watching
b watch
c to watch

45 Researchers claim the new discovery is a major ........ in the fight against malaria.
a breakthrough
b investigation
c progress

46 The Maths problem was really difficult and I just couldn’t ........ the answer.
a check in
b set off
c work out

47 When I was a child, I never ........ about the future.
a have worried
b used to worry
c was worrying

48 A local politician has ........ charges of corruption made by the opposition party.
a accused
b blamed
c denied

49 ........ worries me about society today is how completely we have come to depend on technology.
a That
b What
c Which

50 Cats and dogs are usually kept as ........ .
a farm animals
b wild animals
c pets

8 лет назад

знайдіть допустимі значення змінної у виразах: а) m²+7mб) 3a-5/ a-2в) 7b+9/ 8г) p+2/ p²- 1​

Ответы

знайдіть допустимі значення змінної у виразах:
а) m²+7m
б) 3a-5/ a-2
в) 7b+9/ 8
г) p+2/ p²- 1