Exercises 41–60 contain rational equations with variables in denominators. For each equation, a. write the value or values of the variable that make a denominator zero. These are the restrictions on the variable. b. Keeping the restrictions in mind, solve the equation. 4/x = 5/2x + 3
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
1. Equations & Inequalities
Linear Equations
Problem 46
Textbook Question
Solve each formula for the specified variable. Assume that the denominator is not 0 if variables appear in the denominator. s = 1/2gt², for g (distance traveled by a falling object)
Verified step by step guidance1
Start with the given formula: \( s = \frac{1}{2}gt^2 \).
To solve for \( g \), first isolate \( g \) by multiplying both sides of the equation by 2 to eliminate the fraction: \( 2s = gt^2 \).
Next, divide both sides by \( t^2 \) to solve for \( g \): \( g = \frac{2s}{t^2} \).
Ensure that \( t \neq 0 \) to avoid division by zero, as specified in the problem.
The formula \( g = \frac{2s}{t^2} \) now expresses \( g \) in terms of \( s \) and \( t \).
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Algebraic Manipulation
Algebraic manipulation involves rearranging equations to isolate a specific variable. This process includes operations such as addition, subtraction, multiplication, and division applied to both sides of the equation. Understanding how to manipulate equations is essential for solving for variables in formulas.
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Quadratic Relationships
The formula s = 1/2gt² represents a quadratic relationship between distance (s) and time (t) when an object is in free fall. In this context, g is the acceleration due to gravity. Recognizing the nature of quadratic equations helps in understanding how variables interact and how to isolate them effectively.
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Assumptions in Equations
When solving equations, it is crucial to consider any assumptions, such as the condition that the denominator is not zero. This ensures that the solutions are valid within the context of the problem. Acknowledging these assumptions helps prevent mathematical errors and ensures the integrity of the solution.
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