anonymous
  • anonymous
Assume that y varies inversely with x. If y = 8.8 when x = 2.4, find x when y = 2.1. Round to the nearest tenth
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Jim766
  • Jim766
here is the equation y varies inversely to x \[y = \frac{ K }{ x }\]
Jim766
  • Jim766
now substitute in what they gave you \[8.8=\frac{ k }{ 2.4 }\] can you tell me what k =
Jim766
  • Jim766
multiply 2.4 on both sides

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anonymous
  • anonymous
isnt it 1.6
Jim766
  • Jim766
8.8 * 2.4 = 21.12
Jim766
  • Jim766
k = 21.12 do you see where I get that?
anonymous
  • anonymous
yes
Jim766
  • Jim766
now put the k you just figure out, in with the 2nd part the gave you.. \[y =\frac{ k }{ x }\] \[2.1=\frac{ 21.12 }{ x }\] , now solve for x
Jim766
  • Jim766
when you mult x on both sides you would get 2.1x = 21.2 now divide both sides by 2.1
anonymous
  • anonymous
its 10.1
Jim766
  • Jim766
yes, does it make sense?

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