rhiannacj
rhiannacj rhiannacj
  • 12-06-2022
  • Mathematics
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Please help me with this probability question, I’ve got my maths exam tomorrow (13th June)

Please help me with this probability question Ive got my maths exam tomorrow 13th June class=

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konrad509
konrad509 konrad509
  • 12-06-2022

[tex]\dfrac{2}{n-1}=\dfrac{3}{n}-0.1\\2n=3(n-1)-0.1n(n-1)\\2n=3n-3-0.1n^2+0.1n\\0.1n^2-1.1n+3=0\\n^2-11n+30=0\\n^2-5n-6n+30=0\\n(n-5)-6(n-5)=0\\(n-6)(n-5)=0\\n=6 \vee n=5[/tex]

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