anonymous
  • anonymous
What is the solution set of |2x + 4| < 10? x > 3 and x < –7 x > –7 and x < 3 x < 3 and x > –3 x < –7 and x > 7
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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mathstudent55
  • mathstudent55
When you have an absolute value inequality of the form |A| < b, where A is an expression in x and b is a number, solve the compound inequality: -b < |A| < b
mathstudent55
  • mathstudent55
In this case, the expression in x is 2x + 4, and the number is 10, so to solve |2x + 4| < 10, solve: -10 < 2x + 4 < 10
anonymous
  • anonymous
oh okay so what's the answer? @mathstudent55

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anonymous
  • anonymous
it's a timed test I only have 2 mins left
mathstudent55
  • mathstudent55
Take -10 < 2x + 4 < 10 and start by subtracting 4 from all three sides.
mathstudent55
  • mathstudent55
|dw:1371507320333:dw|
mathstudent55
  • mathstudent55
Then divide all three sides by 2
anonymous
  • anonymous
i need an answer pleaseee @mathstudent55
mathstudent55
  • mathstudent55
|dw:1371507458401:dw|
anonymous
  • anonymous
thanks man
mathstudent55
  • mathstudent55
wlcm

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