Ответ по предмету Математика: Вычислите площадь прямоугольного треугольника с катетами 2целых одна вторая см и 3целых одна пятая см

Предмет: Алгебра, автор: doncovaalisa2007

СРОЧНО
У першій пачці зошитів було удвічі більше ніж у другій. Коли з другої пачки переклали до першої 10 зошитів, то в другій стало в 4 рази менше зошитів ніж у першій.

Яке з наведених рівнянь відповідає умові задачі, якщо кількість зошитів у другій пачці позначити через х?

2х = 4 (х – 10)
4(2х + 10) = х – 10
2х + 10 =4х – 10
2х + 10 = 4(х – 10)

5 лет назад

Предмет: Физика, автор: kaketocdelat

Каково количество вещества в газе, если при температуре -23℃ и давлении 415 кПа объем газа равен 30 л? Примите, что универсальная газовая постоянная 8,3 дж/ моль*К

5 лет назад

Предмет: Английский язык, автор: omarzhanbibi

292. Choose the right variant.
“I haven’t seen my friend for years ”, he says.
a) He says he isn’t seen his friend for ages.
b) He says he will seen his friend for ages.
c) He says he hasn’t seen his friend for ages.
d) He says he hadn’t seen his friend for ages.
293. Choose the correct answer.
The man ______ I bought my second-hand car turned out to be a thief.
a) from whom
b) of which
c) which
d) that
294. Choose the correct answer.
No one knows who erected this Stonehenge or _______ for what purpose.
a) extremely
b) precisely
c) annually
d) frequently
295. Complete the sentence.
The man sitting next to me on the plane was very nervous.
He _______ before.
a) wouldn’t flow
b) hasn’t flow
c) hadn’t flew
d) hadn’t flown
296. Complete the sentence.
Her parents _______ stay here.
a) were
b) am
c) will +
d) are
297. Choose the right answer.
Do you know it is my parents’ wedding anniversary next month?
They _______ married for thirty years.
a) are going to be
b) will have been
c) will be
d) have been
298. Choose the right variant.
Miss Bennet _______ about the party.
a) have been told
b) was tolding
c) were told
d) has been told
299. Choose the correct answer.
What _____ they _____ about when I came in?
a) will / speak
b) did / speak
c) were / speaking
d) do / speak
300. Choose the correct answer.
Because of the ______ in his mind, he stood there for a while undecided.
a) thought
b) proposal
c) comparison
d) confusion

301. Вы не должны прекращать работу, пока не закончите её.
a) You aren’t stop this work until you finish it.
b) You can’t stop this work until you finish it.
c) You shouldn’t stop this work until you finish it.
d) You mayn’t stop this work until you finish it.

302. У нас есть телефон и нам не нужно ходить на почту.
a) We have a phone and we needn’t go to the Post-office.
b) We have a phone and we didn’t have to go to the Post office.
c) We have a phone and we shouldn’t go to the Post office.
d) We have a phone and we needn’t have gone to the Post office.

303. Ему незачем беспокоиться.
a) He needn’t worry.
b) He doesn’t have worry.
c) He isn’t to worry.
d) He mustn’t worry.

304. Вам не нужно было покупать этот словарь. У нас он есть.
a) You needn’t have bought the dictionary. We’ve got it.
b) You didn’t have bought the dictionary. We’ve got it.
c) You wouldn’t have bought the dictionary. We’ve got it.
d) You shouldn’t buy the dictionary. We’ve got it.

305. Всё было ясно, и нам не надо было объяснять это.
a. Everything was clear and we didn’t have to explain it.
b. Everything was clear and we needn’t explain it.
c. Everything was clear and we shouldn’t explain it.
d. Everything was clear and we didn’t explain it.

306. Do you think he --- to apply for this job?
a) should
b) ought
c) can
d) must

307.You --- not smoke, it’s bad for your health.
a) might
b) may
c) need
d) should

308.Tell Erlan he --- clean his room at once.
a) should be
b) might be
c) ought
d) must

309.All people --- realize that the world is in serious trouble.
a) will be
b) should be
c) must
d) could be
310.She spoke in a very low voice, but I --- understand what she said.
a) can
b) may
c) might be
d) could
311.In football, you --- not touch the ball with your hands.
a) must
b) had to
c) ought
d) should not
312.She --- help her mother about the house, it’s her duty.
a) must
b) may
c) can
d) would
313.You --- get a better job if you spoke a few foreign languages.
a) may
b) ought
c) shall
d) could
314.He has lived in England for some time but he --- speak English.
a) can’t
b) may
c) has to
d) ought

5 лет назад

Предмет: Математика, автор: Doshchechnikova

начерти два луча выходяшие из одной точки и лежашие на одной прямой обозначить их и записать

9 лет назад

Предмет: Математика, автор: sasha56734

запишите все трехзначные числа без повторения одинаковых цифр,в записи которых используются цифры. 5 6 7.

9 лет назад

Вычислите площадь прямоугольного треугольника с катетами 2целых одна вторая см и 3целых одна пятая см

Ответы