anonymous
  • anonymous
2. Suppose that y varies directly with x and inversely with z, and y = 18 when x = 15 and z = 5. Write the equation that models the relationship. Then find y when x = 21 and z = 7. (1 point) Connections help????
Algebra
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
for variation problems, you must first find the constant. the formula for direct variation is Y = KX formula for inverse variation is Y = k/Z so combine the two based on your problem Y = (KX)/Z plug in given values for y x and z to find k tell me what K is
anonymous
  • anonymous
k=6?
anonymous
  • anonymous
correct

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anonymous
  • anonymous
now using that value of k use the same formula and solve for Y based on that x = 21 and z = 7 what did you get?
anonymous
  • anonymous
y=18?
anonymous
  • anonymous
You are absolutely right!!!! Remeber those formulas and you can do any variation problem
anonymous
  • anonymous
thank you so much

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