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dkornelsen10 dkornelsen10
  • 26-01-2017
  • Mathematics
Answered

x varies inversely as y^2, and x = 4 when y = 10. Find x when y = 2.

Ax = 5
Bx = 80
Cx = 100

Verified Answer :

bcalle
bcalle bcalle
  • 26-01-2017

x = k/y^2 is the equation for this statement
substitute the values for the first x and y to find k, the constant of variation.
4 = k/10^2
4 = k/100 Multiply by 100 to clear the fraction
400 = k
Now substitute the k back in and make a new equation that will find any value of x that fits this scenario
x = 400/y^2
x = 400/4
x = 100

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