baconwhale671
baconwhale671 baconwhale671
  • 25-01-2017
  • Mathematics
contestada

What is the solution set? −2.8x + 5.6 < 8.4

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tamibartholomew1
tamibartholomew1 tamibartholomew1
  • 25-01-2017
−2.8x + 5.6 < 8.4

subtract 5.6 from both sides and you get -2.8x<2.8

Next you divide both sides by -2.8 and you end up with x > -1

Your final answer is x>-1
If you are putting this on a number line it would be an open circle going to the right
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Tucon
Tucon Tucon
  • 25-01-2017
   
[tex]\displaystyle\\ -2.8x + 5.6 \ \textless \ 8.4 \\ \\ -2.8x \ \textless \ 8.4 -5.6 \\ \\ -2.8x \ \textless \ 2.8 \\ \\ x \ \textgreater \frac{2.8}{-2.8}\\\\ x \ \textgreater \ -1\\\\ \boxed{\bold{x \in (-1,~\infty)}} [/tex]



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