   Chapter 4.3, Problem 53E Finite Mathematics and Applied Cal...

7th Edition
Stefan Waner + 1 other
ISBN: 9781337274203

Solutions

Chapter
Section Finite Mathematics and Applied Cal...

7th Edition
Stefan Waner + 1 other
ISBN: 9781337274203
Textbook Problem

In Exercises 51-56, x, y and z represent the weights of the three ingredients X, Y, and Z in a gasoline blend. Say which of the following is represented by a linear equation in x, y, and z, and give a form of the equation when it is.The blend contains 30% ingredient Y by weight.

To determine

If the condition forms a linear equation in x,y,z also, give the form of the linear equation if possible and x,y,z represent the weights of three ingredients X, Y and Z in a gasoline blend. And the blend contains 30% of ingredient Y by weight.

Explanation

Since the x,y,z represent the weights of three ingredients X, Y and Z in a gasoline blend.

It is mentioned that the blend contains 30% of ingredient Y by weight.

Therefore, it can be rephrased as the amount of Y is 30% of the total weight.

y=0.30(x+y+z)y=0.3x+0.3y+0.3z0=0

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