katiemendez92 katiemendez92
  • 09-03-2020
  • Mathematics
contestada

Which of the following is the solution set of -21xl <-8
{xl-4>x>4)
O{x-4 {xIx<-4 or x>4)

Respuesta :

kudzordzifrancis
kudzordzifrancis kudzordzifrancis
  • 15-03-2020

Answer:

{[tex]x|x \: < \: - 4 \: or \: x \: > \: 4[/tex]}

Step-by-step explanation:

We want to solve the inequality:

[tex] - 2 |x| \: < \: - 8[/tex]

We divide through by -2 and reverse the inequality sign.

[tex] |x| \: > \: 4[/tex]

By definition of absolute value function:

[tex] - x \: > \:4 \: or \: x \: > \: 4[/tex]

We divide through by -1 in the first inequality and reverse the sign to get:

[tex]x \: < \: - 4 \: or \: x \: > \: 4[/tex]

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