Предмет: Математика, автор: alibaevae

Найдите неизвестные члены пропорции : 1) x:20=6,2:31 2) 9,6:x=8,4:0,7 3)28:4=4,2:x 4) 9:5=x:4

Ответы

Автор ответа: kvchakina1998

1)х= 20*6.2/31=4
2)х=9.6*0.78.4=0.8
3)х=4*4.228=0.6
4)х=9*45=7.2

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