Use a system of linear equations with two variables and two equations to solve. 204 students enrolled in a freshman-level chemistry class. By the end of the semester, 5 times the number of students passed as failed. Find the number of students who passed, and the number of students who failed. Passing Students: Failing Students: Number Number

Calculus: Early Transcendentals
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Author:James Stewart
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Chapter1: Functions And Models
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Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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### Solving Linear Systems with Two Variables

**Problem Statement:**
204 students enrolled in a freshman-level chemistry class. By the end of the semester, 5 times the number of students passed as failed. Find the number of students who passed, and the number of students who failed.

**Solution Methods:**
Use a system of linear equations with two variables to solve the problem.

**Formulation:**
Let \( x \) be the number of students who passed the class.
Let \( y \) be the number of students who failed the class.

**Equations:**
1. Total number of students: 
   \[
   x + y = 204
   \]
2. Five times as many students passed as failed: 
   \[
   x = 5y
   \]

**Steps to Solve:**
1. Substitute \( x \) from the second equation into the first equation:
   \[
   5y + y = 204
   \]
2. Combine like terms and solve for \( y \):
   \[
   6y = 204 \implies y = 34
   \]
3. Substitute \( y \) back into the second equation to find \( x \):
   \[
   x = 5 \cdot 34 = 170
   \]

**Result:**
- Number of Passing Students: \( 170 \)
- Number of Failing Students: \( 34 \)

**Input Fields:**
- **Passing Students:** [Input Field]
- **Failing Students:** [Input Field]

**Graphical Representation:**
There are no graphs or diagrams provided in the original text.

This example demonstrates how systems of linear equations can be applied to real-world problems, helping us to understand and analyze different scenarios mathematically.
Transcribed Image Text:### Solving Linear Systems with Two Variables **Problem Statement:** 204 students enrolled in a freshman-level chemistry class. By the end of the semester, 5 times the number of students passed as failed. Find the number of students who passed, and the number of students who failed. **Solution Methods:** Use a system of linear equations with two variables to solve the problem. **Formulation:** Let \( x \) be the number of students who passed the class. Let \( y \) be the number of students who failed the class. **Equations:** 1. Total number of students: \[ x + y = 204 \] 2. Five times as many students passed as failed: \[ x = 5y \] **Steps to Solve:** 1. Substitute \( x \) from the second equation into the first equation: \[ 5y + y = 204 \] 2. Combine like terms and solve for \( y \): \[ 6y = 204 \implies y = 34 \] 3. Substitute \( y \) back into the second equation to find \( x \): \[ x = 5 \cdot 34 = 170 \] **Result:** - Number of Passing Students: \( 170 \) - Number of Failing Students: \( 34 \) **Input Fields:** - **Passing Students:** [Input Field] - **Failing Students:** [Input Field] **Graphical Representation:** There are no graphs or diagrams provided in the original text. This example demonstrates how systems of linear equations can be applied to real-world problems, helping us to understand and analyze different scenarios mathematically.
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