A 14 kg sample of a certain alloy (mixture of metals) contains 5 kg of tin and 9 kg of copper. A chemist decides to study the properties of the alloy as its percentage of tin is varied. Suppose x represents the quantity of tin, in kg, the chemist adds to the sample. Let represent the fraction of the mixture's mass composed of tin--that is, the ratio of the tin's mass to the mixture's total mass. A negative value of x represents a quantity of tin removed from the original 14 kg sample.
= ______ kg. Round to 2 decimal places.

Question

A 14 kg sample of a certain alloy (mixture of metals) contains 5 kg of tin and 9 kg of copper. A chemist decides to study the properties of the alloy as its percentage of tin is varied. Suppose x represents the quantity of tin, in kg, the chemist adds to the sample. Let  represent the fraction of the mixture's mass composed of tin--that is, the ratio of the tin's mass to the mixture's total mass. A negative value of x represents a quantity of tin removed from the original 14 kg sample.
  = ______ kg. Round to 2 decimal places.

Quizplus · Accepted Answer

The Answer of A 14 kg sample of a certain alloy (mixture of metals) contains 5 kg of tin and 9 kg of copper. A chemist decides to study the properties of the alloy as its percentage of tin is varied. Suppose x represents the quantity of tin, in kg, the chemist adds to the sample. Let  represent the fraction of the mixture's mass composed of tin--that is, the ratio of the tin's mass to the mixture's total mass. A negative value of x represents a quantity of tin removed from the original 14 kg sample.
  = ______ kg. Round to 2 decimal places.

A 14 Kg Sample of a Certain Alloy (Mixture of Metals)