Chapter 7: Problem 33
What is the relationship among time traveled, distance traveled, and rate of travel?
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Chapter 7: Problem 33
What is the relationship among time traveled, distance traveled, and rate of travel?
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Doctors use the rational expression $$\frac{D A}{A+12}$$ to determine the dosage of a drug prescribed for children. In this expression, \(A=\) the child's age and \(D=\) the adult dosage. Use the expression. If the normal adult dosage of medication is 1000 milligrams, what dosage should an 8 -year-old child receive?
Simplify complex rational expression by the method of your choice. \(\frac{\frac{1}{x+2}}{1+\frac{1}{x+2}}\)
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Use the four-step procedure for solving variation problems given on page 551 The number of pens sold varies inversely as the price per pen. If 4000 pens are sold at a price of 1.50 dollar each, find the number of pens sold at a price of 1.20 dollar each.
Simplify complex rational expression by the method of your choice. \(\frac{\frac{1}{2}+\frac{1}{4}}{\frac{1}{2}+\frac{1}{3}}\)
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