dolphinstar4312 dolphinstar4312
  • 20-11-2016
  • Mathematics
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5r^2-44r+120=-30+11r

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MohamedSharif
MohamedSharif MohamedSharif
  • 20-11-2016
5r^2-44r+120=-30+11
5r^2=25r
25r-44r+120=-30+11
-19r+120=-19
-19r=-19-120
-19r=-139 the divide both sides by -19
r=-7.3
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