annelisemathbrain annelisemathbrain
  • 02-03-2017
  • Mathematics
contestada

Fifteen over twenty five equals nine over what?

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helpmehplzz
helpmehplzz helpmehplzz
  • 02-03-2017
I thought it said 21 pilots at first
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Аноним Аноним
  • 02-03-2017
this is proportion
15/25 = 9/x - given
15x = 225 - cross multiply
x = 15 - divide by 15
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