Предмет: Математика, автор: d275874

Найти х
1) 76х / 10 = 7,6 / 5 ( записано дробью)
2) 0,07 / 0, 09 = х / 1,8 ( записано дробью)
3) 8 : 14 = х : 21

Ответы

Автор ответа: nataschkaaaa
1

Если что-то не понятно,то пиши

Приложения:
d275874: вау , спасибо )))))
d275874: очень удобно когда присылают фоткой)
nataschkaaaa: Не за что,главное,чтобы почерк мой понял(-а)
Автор ответа: tatsach
1

Ответ:

Пошаговое объяснение:

1) 76х / 10 = 7,6 / 5

76х*5=10*7,6

380х=76

Х=76:380

Х=0,2

2) 0,07 / 0, 09 = х / 1,8

0,09х=1,8*0,07

0,09х=0,126

Х=0,126:0,09

Х=1,4

3) 8 : 14 = х : 21

14х=21*8

14х=168

Х=168:14

Х=12

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Алгебра, автор: 410001
log4log2logкорень из 5(х-1)=3^log1/9 4
1 год назад
Предмет: Физика, автор: bhtrfu
Какое колищиство теплоты Q потребуется, чтобы расплавить лёд массой m = 100 г , находящийся при температуре t1=-5.00 C, а образовавшуюся воду нагреть до температуры t2 =20.0 C
1 год назад
Предмет: Математика, автор: Юленька33
Вычислить (5i-2i)(5i+2i)+1
1 год назад
Предмет: Математика, автор: 4класs
помогите поже ! :) 3 сравните
8 лет назад
Предмет: Английский язык, автор: evaPR
Complete the story by supplying the correct forms of the verbs. Mr. Smith ... 1) (to go) on a business trip to London and three of his friends asked him if he ... 2) (not to mind)... 3) (to buy) umbrellas for them. Mr. Smith ... 4) (to check in) at the hotel, ... 5) (to leave) his luggage and ... 6) (to decide) to go to the shop. For nearly a fortnight it ... 7) (to pour) in London, and on that day the weather was nasty too: it ... 8) (to rain) hard, a strong wind ...9) (to blow), and there was no hope that the sun ever ...10) (to appear). So Mr. Smith ... 11) (to fetch) his umbrella and ... 12) (to put on) his raincoat, because he was afraid he ... 13) (to get) wet through. To Mr. Smith's disappointment all the umbrellas ... 14) (to be sold out) the day before, but the owner of the shop said they ... 15) (to have) no supply for a long time and he ... 16) (to be sure) ... 17) (to get) some umbrellas in the afternoon. At the time Mr. Smith ... 18) (to leave) the shop it no longer ... 19) (to rain), the sun already ... 20) (to shine) brightly, and one could hardly believe that some ten minutes before it... 21) (to rain) cats and dogs. Mr. Smith ... 22) (to leave) his umbrella behind, but the weather was so fine that he even ... 23) (not to remember) about it. He got on the bus that ... 24) (to be) ... 25) (to take) him to the hotel, but when he ... 26) (to get off) the bus, by mistake he ... 27) (to take) his neighbour's umbrella and suddenly he heard the man ... 28) (to say): "Sorry, sir, I ... 29) (to believe) this is my umbrella." "I am sorry, sir," said Mr. Smith, he ... 30) (to feel) ashamed - the people ... 31) (may) ... 32) (to think) he was a thief - and he ... 33) (to hurry) out of the bus. He ... 34) (to come) to the hotel,... 35) (to have) dinner, and in the evening he ... 36) (to go) to the shop ... 37) (to buy) umbrellas. He ... 38) (to buy) three umbrellas and the owner ... 39) (to return) him the umbrella he ... 40) (to leave) behind, and when he ... 41) (to return) with the four umbrellas in his hands, he ... 42) (to meet) the man whose umbrella he ... 43) (to take) by mistake when he ... 44) (to leave) the bus. The man smiled at him and said: "You ...45) (to have) a lucky day, eh?"
8 лет назад