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UkoKoshka [18]
3 years ago
10

Together a refrigerator and a desk cost $216. Find the price of each if the refrigerator costs three times as much as the desk

Mathematics
2 answers:
zheka24 [161]3 years ago
6 0

Refrigerator 162$ and desk cost 54

marshall27 [118]3 years ago
3 0

Step-by-step explanation:

  • Cost of refrigerator and desk =$216
  • 3x+x=216
  • 4x=216
  • x=216/4
  • x=54
  • now,
  • Cost of refrigerator = 3x
  • = 3*54
  • = 162
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b) 90% confidence mean that the true proportion may or may not be in the given range, but we are 90% certain that it does.

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0.50 lies outside of the confidence interval obtained for the true population proportion of US automobiles that are made in Japan, hence, the confidence interval contradicts the politician's claim.

Hope this Helps!!!

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