Предмет: Математика, автор: soroka0228

Упростите выражение 4+0.2•(3-х)-0.5•(2х+5).Чему равно его значение при х=10

Ответы

Автор ответа: Montale

6

4+0,2(3-х)-0,5(2х+5)=4+0,6-0,2х-х-2,5=-1,2х+2,1
При х=10
-1,2*10+2,1=-12+2,1=-9,9

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