Chapter 3: Problem 79
Solve the equation. $$x-2=28$$
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In Citizen of the Galaxy by Robert Heinlein, Thorby learns that he owns “an interest in a company . . . through a chain of six companies—18% of 31% of 43% of 19% of 44% of 27%, a share so microscopic that he lost track.” Let x represent the total worth of the company in which Thorby owns a share. Suppose Thorby's share of the company is worth 1000 credits. Write and solve an equation to find the total worth of the company.
The formula \(d=\frac{n}{2}+26\) relates nozzle pressure \(n\) (in pounds per square inch) and the maximum distance the water reaches \(d\) (in feet) for a fire hose with a certain size nozzle. How much pressure is needed if such a hose is held 50 feet from a fire?
Evaluate the expression. $$-6 \div 3-4 \cdot 5$$
\(2 \cdot 2 \cdot 2 \cdot 2\)
Use the following information. A person has quarters, dimes, and nickels with a total value of 500 cents ( 5.00 dollar). The number of nickels is twice the number of quarters. The number of dimes is four less than the number of quarters. Write and solve an equation to find the number of each type of coin.
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