Предмет: Алгебра, автор: тимофей134

ПОМАГИТЕ ПОЖАЛУЙСТА!!!

Приложения:

HimMed: Какой номер?

тимофей134: 9,

тимофей134: 10

тимофей134: и 8

тимофей134: пожалуйста

Ответы

Автор ответа: Devicyn

1. б и г
2. a=-4 b=6,3 c=-2
3.x=3
4.x=20+4y/5
6.y=3-2x построить график может любой просто разные значения x подставляешь в это выражаешь (например я беру x=1 то y=1 (3-2=1))

Автор ответа: mkbalmangi

№8.
8х+3у=14
8*(-1/8)+3у=14
-1+3у=14
3у=14+1
3у=15
у=5 -ордината т.А

mkbalmangi: №9
5х+у=14
Пусть у=2х, тогда
5х+2х=14
7х=14
х=2, соответственно у=2*2=4
ответ: (2;4)

тимофей134: огромное вам спасибо

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