Question

варіант 2 терміново даю 20 балів​

Answer 1

Ответ:

hfx

Объяснение:

uxhzhhshshhsdjdjjdjdj

Answer 2

$3 < x < 10$

$x∈[3.1 ;9.9 ]$

$4 - 2x = 4 - 2 \times 3.1 = 4 - 6.2 = -2.2$

$4 - 2x = 4 - 2 \times 9.9 = 4 - 19.8 = - 15.8$

↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓

$- 15.8 < 4 - 2x < - 2.2$

$- 4x - 5 = - 4 \times 3.1 - 5 = - 12.4 - 5 = - 17.4$

$- 4x - 5 = - 4 \times 9.9 - 5 = - 39.6 - 5 = - 44.6$

↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓

$- 44.6 < - 4x - 5 < - 17.4$