Предмет: Математика, автор: DanilUA

Сын моложе матери в 4 раза.Сколько лет матери,если она старше сына на 27 лет?

Ответы

Автор ответа: 13iul

0

Сыну x лет, маме 4x лет, и она старше сына на 27 лет. Запишем в виде уравнения:
4x = x + 27
3x = 27
x = 9 (лет) - сыну.
Мама в четыре раза старше, 4*x = 4*9 = 36 лет

Ответ: 36 лет

Автор ответа: кот152

0

..................................................

Приложения:

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Алгебра, автор: valibekov2017

Реши уравнение x+√x=11.

7 лет назад

Предмет: Информатика, автор: lianazet28

помогите!!!! срочно.Даю 40 быллов

7 лет назад

Предмет: Английский язык, автор: KateBap

1. Choose the correct options to complete the sentences.

1) Many _____ grow because of a growing informal economy which creates demand for workers.
a) high-rise
b) outskirts
c) slums
d) neighbourhood

2) The city has had a _____ art scene for more than 100 years.
a) thriving
b) affordable
c) iconic
d) diverse

3) _____ doors give access to a small courtyard at the back of the house.
a) basement
b) shutter
c) chimney
d) patio

4) I think it’s time I should tell you a few _____to show you what you really are.
a) homesicks
b) home truths
c) hit homes
d) on the houses

5) I bought these sunglasses from a street _____ in Florence.
a) reveller
b) performer
c) vendor
d) merry-maker

6) Sometimes a _____ gives you more information than reading the main title.
a) review
b) subtitle
c) script
d) trailer

7) This movie was _____ Australia by Oscar-winning director Steve Roger.
a) set in
b) released in
c) based on
d) filmed in

8) There are some real _____ opportunities as Apple reduces its stock.
a) bargain
b) stroll
c) merchant
d) overpriced

9) If they _____ these shoes I’ll buy two pairs, because I like them.
a) shell out
b) shop around
c) mark down
d) splash out

10) Our aim is to make the _____, museums, and our heritage accessible to all.
a) performing arts
b) oil paintings
c) cinematography
d) fiction

11) We have lived _____ 108 Rolling Street since 2004.
a) in
b) on
c) at
d) –

12) I would have helped my friend but I had very _____ time so I had to refuse her.
a) few
b) plenty
c) lots of
d) little

13) I watched five films during the festival, but _____ of them was good.
a) neither
b) either
c) none
d) any

14) They weren’t able to stay for _____ concert.
a) every
b) the whole
c) all the
d) each

15) The teacher gave _____ of the students a piece of paper.
a) every
b) whole
c) all
d) each

16) I told him that I _____ his friend for months.
a) did not see
b) have not seen
c) had not seen
d) would not see

17) Rachael: “Can I go to the festival?” Rachael wanted to know _____ to the festival.
a) if she could go
b) if she can go
c) if she was able to
d) when she could go

18) As I _____, I am not much of a television watcher.
a) say
b) said
c) tell
d) told

19) One of my friends is always _____ getting up early every morning.
a) complaining
b) denying
c) accusing
d) promising

20) Mark was angry _____ Jack because he came late to the concert.
a) by
b) at
c) about
d) for

7 лет назад

Предмет: Алгебра, автор: 9004162

Составьте формулу для решения задачи.Из города выехал автомобиль со скоростью 60кмч.Через час вслед за ним выехал велосипедист со скоростью v кмч.Какое расстояние будет между ними через t часов? Ответьте на вопрос задачи,если v=10,5кмч, t=2ч. ПЛИЗЗЗЗ ПОМОГИТЕ

10 лет назад

Предмет: Геометрия, автор: melkiy127

Назови основные понятия геометрии

10 лет назад