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# Tutor profile: Khoi F.

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Khoi F.
Electrical Engineer: Math, Science, and Engineering
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## Questions

### Subject:Pre-Algebra

TutorMe
Question:

Solve x/5 = 10/5. Find x.

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Khoi F.

Multiply 5 on both sides of the equation to arrive at x = 50/5. Therefore, x = 10. Proportions are used to find ratios on either sides of the equation. This equivalently finds the value of x to have the same ratio on both sides of the equation.

### Subject:Electrical Engineering

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Question:

Why should we learn a Thevenin Equivalent circuit model?

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Khoi F.

This allows a complex component of circuitry to be modeled as a simple voltage source and a series resistor. This allows someone to visualize the circuitry as a black box and and only need to worry about the input and output of the system.

### Subject:Algebra

TutorMe
Question:

Solve 5 + x = 6. What is the value of x? What is the meaning of the variable x?

Inactive
Khoi F.

Subtract 5 from both sides of the equation to cancel out 5 from the left hand side. Arrive at X = 1. The variable x represents a variable that is unknown, this is the variable that we seek to make the equation true.

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