Chapter 1: Problem 107
What is a linear equation in one variable? Give an example of this type of equation.
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Chapter 1: Problem 107
What is a linear equation in one variable? Give an example of this type of equation.
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Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? $$A=\frac{1}{2} b h \text { for } b$$
Explain how to solve \(x^{2}+6 x+8=0\) by completing the square.
In Exercises \(127-130,\) solve each equation by the method of your choice. $$ \frac{1}{x^{2}-3 x+2}=\frac{1}{x+2}+\frac{5}{x^{2}-4} $$
An automobile repair shop charged a customer \(\$ 448\), listing \(\$ 63\) for parts and the remainder for labor. If the cost of labor is \(\$ 35\) per hour, how many hours of labor did it take to repair the car?
In a film, the actor Charles Coburn plays an elderly "uncle" character criticized for marrying a woman when he is 3 times her age. He wittily replies, "Ah, but in 20 years time I shall only be twice her age." How old is the "uncle" and the woman?
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