Homework Help Forum: Math

Posted by Maria on Wednesday, November 4, 2009 at 8:19am.

1. |x+3|=4 x = 1, -7 2. |x-2|=6 x = 8, -4 3. |x-5|<3 x = ?? 4. |2x+3|>*17 x = ?? [>* means greater/less than OR equal to] Please check. And show how to do numbers 3 and 4. Thank you.

• Math - Reiny, Wednesday, November 4, 2009 at 8:34am

  first two are correct #3 |x-5|<3 (x-5) < 3 AND -(x-5) < 3 x < 8 AND -x < -2 x < 8 AND x > 2 so 2 < x < 8 for #4 |2x+3| ≥ 17 2x+3 ≥ 17 OR -2x-3 ≥ 17 x ≥ 7 OR x ≤ -10

  
  

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