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aliya0001 [1]
2 years ago
10

Y varies inversely with x. When x = 3 then y = 5. Find the value of x when y = 21

Mathematics
1 answer:
alexgriva [62]2 years ago
7 0

Answer:

  • y=1/x
  • y=k/x
  • k=yx
  • given x=3,y=5
  • k=5×3=15
  • when y=21
  • x=k/y
  • x=15/21=0.7143ans

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