Предмет: Математика, автор: popovar727

3) Решить систему неравенств.
2x — 1 < x + 3
5х – 1 >6 — 2х
x — 5 < 0
4)При каких значениях а система неравенств 3х > 12,
х< а

Помогите пожалуйста дам 20 баллов

Ответы

Автор ответа: kusukbaevakarina102

1

Ответ:

3)2х-1<+3 5x-1>6-2x x-5<0

2x-1<x+3=> 5x-1>-2x+6=> x-5=0

x<4. 7x>7=> x1=5.

x>1.

Пошаговое объяснение :

kusukbaevakarina102: 4)из первого неравенства получаем х>4. тогда надо ,чтобы а=4,Во втором неравенстве получаем х<4 или х=4. Эти два неравенства тогда не имеют общего решения!

popovar727: Спасибо))

kusukbaevakarina102: Не зачто)))

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