turbo1998 turbo1998
  • 12-07-2017
  • Mathematics
contestada

suppose y varies jointly as x and z. Find y when when x =-4 and z=25, if y=206 when x=-6 and z=-11. Round your answer to the nearest hundredth , if necessary.

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bcalle
bcalle bcalle
  • 12-07-2017
y = kxz
Find k first to get the equation.
206 = k*(6*11)
206 = 66*k
Divide both sides by 66.
3.12 = k

y = 3.12xz
y = 3.12(-4*25)
y = 3.12(-100)
y = -312
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