Предмет: Математика, автор: ВикторияАксенова

Ребят можно всё но с решением и ответом!

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Автор ответа: Flash3146

t- x
125с-125/500=1/4=0,25
(3,25+7,25)x=63
10,5x=63:10,5
x=6(ч)
#2
390/6=65(км/ч)-V
390/65-35=390/30=13(ч)
#3
t-x
(18+(18-2)*x=680
34x=680:34
x=20(мин)
#4
V2-x
(62+x)*5=650
310+5x=650
5x=650-310
5x=340:5
x=68(км/ч)
#5
8*30/6=240/6=40(км/ч)

Автор ответа: ВикторияАксенова

А можно попонятнее я в 4

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