anonymous
  • anonymous
Solve (x - 2 < 5) U (x + 7 > 6). {x | -1 < x < 7} {all real numbers} Ø i got A
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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DebbieG
  • DebbieG
Looks good. :)
DebbieG
  • DebbieG
oh wait stop.
DebbieG
  • DebbieG
NOPE. sorry.

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More answers

DebbieG
  • DebbieG
You want the UNION, so you want EVERYTHING that is in EITHER SET. think about what's in each set, and then what you get if you take all that is EITHER SET.
anonymous
  • anonymous
Look ! What the numbers can you get from (x - 2 < 5) ?
DebbieG
  • DebbieG
yooohooo... @dirtydan667
anonymous
  • anonymous
x>=4
DebbieG
  • DebbieG
From x - 2 < 5 ? add 2 to both sides.
DebbieG
  • DebbieG
and then for x + 7 > 6 subtract 7 from both sides. what's the solution there?
DebbieG
  • DebbieG
Since this is a union, you want: all x's that are in the FIRST set OR the SECOND set (or both)
anonymous
  • anonymous
No let see : 6-2<5 5-2<5 4-2<5 ... You can give 6>= Ok ? Do you understand ?
anonymous
  • anonymous
sorry guys i went to the bathroom lets continue so subtract seven i get x>-1
anonymous
  • anonymous
i think its 0/ guys @E.ali and @DebbieG
DebbieG
  • DebbieG
what did you get for the first one? From x - 2 < 5 ? add 2 to both sides. x>-1 is correct but I haven't seen you answer the first one correctly.
anonymous
  • anonymous
oh nvm all real numbers
anonymous
  • anonymous
X-4<7
anonymous
  • anonymous
@DebbieG
DebbieG
  • DebbieG
Yes, all reals. :) In general, if you take a union of 2 sets, one going to -inf and the other to +inf and they overlap in the middle, then you will get all real numbers. :)
anonymous
  • anonymous
thanks for explaing it more out
DebbieG
  • DebbieG
|dw:1377955667923:dw|
DebbieG
  • DebbieG
^^^ terrible drawing, but hopefully you get the idea, lol.

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