Предмет: Математика, автор: aybekkurmanov

СОСТАВТЕ УРАВНЕНИЕ!!!И НАПИШИТЕ РЕШЕНИЕ.На базаре на 19200 руб купили 2-х попугаев, 1 щенка и 1 котёнка.Щенок в 3 раза дороже котёнка,но в 2 раза дешевле попугая.

Ответы

Автор ответа: SvetlGolov
0
Х= котенок
3х= щенок
6х= попугай
2*6х + 3х +х = 19200
12х+3х+х = 19200
16х=19200
Х= 1200
Ответ: 1200 р. стоит котенок, 3600 р. щенок , 7200 попугай
Автор ответа: vlad262002
0
Пусть х руб. -стоит котенок, тогда щенок стоит 3х руб. , попугай 6х руб. За двоих попугаев заплатили 12х руб. Вся покупка стоимостью 19200 руб. Составим уравнение 

х+ 3х+ 12х = 19200 
16х = 19200 
х= 19200 : 16 
х = 1200 

1200( руб) - стоит котенок 
6 * 1200 = 7200 ( руб) - стоит попугай
3* 1200=3600 (руб) стоит щенок
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4. – We just (to start) producing this model and we already (to receive) a lot of orders for it.

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– I (to think) 15 or 20.

5. – When you (to look through) the catalogues?

– I (to think) I (to do) it tomorrow. Let’s meet on Friday if it (to be) convenient to you.

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10. She’s flying to Rome tomorrow. She (to send) her family a telegram as soon as she (to

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1. Mr. Blake said, “We usually sell goods on CIF terms.”

2. Mr. Smith said, “I flew to Moscow by an Aeroflot plane last month.”

3. Mr. Bell said to Jack, “Please give me your dictionary.”

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5. The teacher said to the pupils, “Learn the poem by heart.”

6. Jack asked, “Who has taken my pen?”

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8. Mary’s mother asks her, “Are you hungry or thirsty?”

9. Barry said, “Our plane will take off on time.”

10. Betsy says, “I’m leaving for London next week.”