Пошаговое объяснение:
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Пошаговое объяснение:
9)
(30088-27028):30+29*31=1001
1)
_30088
27028
3060
2)
_3060 |__30
30 |102
_60
60
0
3)
29*31=20*31+9*31=620+279=899
4)
102+899=1001
10) магазины
1 магазин
1)4*190=760(руб) стоят 4 полотенца
2)760+950=1710 (руб) стоят полотенца и противень
3)5*90=450 (руб) стоят 5 стаканов
4)1710+450=2160 (руб) стоят 5 стаканов 4 полотенца и противень
5)2160+500=2660 (руб) вся покупка первого магазина
2магазин
1)220*4=880 (руб) стоят 4 полотенца
2)880+940=1820 (руб) стоят 4 полотенца и противень
3)5*80=400 (руб) стоят 5 стаканов
4)400+1820=2220(руб) стоят 4 полотенца, противень, 5 стаканов
5)2220+470=2690(руб) вся покупка второго магазина
ответ: 2660 рублей покупка первого магазина. Дешевле.
11) города
Согласно графику, город Пекин 4 по численности населения
2.6*35=91 (га)
ответ: Горохом засеяно 91 Га
2) Непонятно, что за знак в конце.
3)900:12=75 (Книг) -1%
75*100=7500 (Книг)
ответ: 7500 книг в библиотеке
4)12+8.3х+1.5х=95.3
9.8х=95.3-12
9.8х=83.3
х=8.5
5) 100-30-60=10% сотка осталось
42:10=4.2 (м) - 1%
4.2*100=420 метров
ответ: 420 метров в мотке.