Respuesta :

Answer :

  • 0 ≤ x < 6.5

Explanation :

  • -7 < -2x + 6 ≤ 6

deduct 6 from all the parts

  • -7 - 6 < -2x + 6 - 6 ≤ 6 - 6

simplify

  • -13 < -2x ≤ 0

divide the inequality by -2

  • -13/-2 < -2x/-2 ≤ 0

when there's a change in sign, the symbol of inequality alters itself

  • 6.5 > x ≥ 0

or

  • 0 ≤ x < 6.5

thus, the solution set in interval notation is 0 ≤ x < 6.5 .

Answer:

[tex]\left[0,\dfrac{13}{2}\right)[/tex]

Step-by-step explanation:

Given compound inequality:

[tex]-7 < -2x+6\leq6[/tex]

To solve the compound inequality, we need to break it down into its individual inequalities, solve each one separately, and then combine their solutions.

Inequality 1:

-[tex]-7 < -2x+6\\\\\\-7-6 < -2x+6-6\\\\\\-13 < -2x\\\\\\\dfrac{-13}{-2} > \dfrac{-2x}{-2}\\\\\\\dfrac{13}{2} > x\\\\\\x < \dfrac{13}{2}[/tex]

Inequality 2:

[tex]-2x+6\leq 6\\\\\\-2x+6-6\leq 6-6\\\\\\-2x\leq0\\\\\\\dfrac{-2x}{-2}\geq \dfrac{0}{-2}\\\\\\x\geq 0[/tex]

Combine the intervals:

[tex]0\leq x < \dfrac{13}{2}[/tex]

In interval notation, this solution set is:

[tex]\Large\boxed{\boxed{\left[0,\dfrac{13}{2}\right)}}[/tex]

To graph this solution on a number line:

  • Plot a closed circle at 0 (because 0 is included in the solution).
  • Plot an open circle at 13/2​ (because 13/2​ is not included in the solution).
  • Shade the region between 0 and 13/2 to represent all values of x that satisfy the inequality.
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