anonymous
  • anonymous
the proportion is blank over 4 = 21 over 12 and i have to solve it.
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
so you have blank/4=21/12 what do you have to take 4 times to get 12, answer 3, or 12/3 = 4 so 21/3 = 7 the blank is 7
anonymous
  • anonymous
wow thank you
anonymous
  • anonymous
6 over 10 equals 9 over y i need to solve it

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anonymous
  • anonymous
wer're going to do this one a little different cross multiply: 6 * y = 10 * 9 6*y = 90 divide both sides by 6, so 90/6 = 15
anonymous
  • anonymous
come again?
anonymous
  • anonymous
im not good at math
anonymous
  • anonymous
you have 6 over 10 = 9 over something or 6/10 = 9/box take 9/6 = 3/2 reduced then take 10 *(3/2) = (10*3)/2=30/2=15
anonymous
  • anonymous
so the blank is 15?
anonymous
  • anonymous
you're right
anonymous
  • anonymous
oh okay

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