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53. Electric Circuits An electric circuit contains two resistors connected in parallel, as shown in the figure. If the resistances of these resistors are R1 and R2 ohms, respectively, then their combined resistance R is given by the formula 1 R = 1 R R R a. Express R as a simplified rational expression. b. Evaluate the rational expression if R1 = 4 ohms and R2 = 10 ohms.

53. Electric Circuits An electric circuit contains two resistors connected in parallel, as shown in the figure. If the resistances of these resistors are R1 and R2 ohms, respectively, then their combined resistance R is given by the formula 1 R = 1 R R R a. Express R as a simplified rational expression. b. Evaluate the rational expression if R1 = 4 ohms and R2 = 10 ohms.

College Algebra
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
ChapterP: Prerequisites
SectionP.7: Rational Expressions
Problem 97E
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Applying the Concepts 53. Electric Circuits An electric circuit contains two resistors connected in parallel, as shown in the figure. If the resistances of these resistors are R and R2 ohms, respectively, then their combined resistance R is given by the formula 1 R = 1 R R R R2 a. Express R as a simplified rational expression. b. Evaluate the rational expression if R1 = 4 ohms and R2 10 ohms.
Transcribed Image Text:Applying the Concepts 53. Electric Circuits An electric circuit contains two resistors connected in parallel, as shown in the figure. If the resistances of these resistors are R and R2 ohms, respectively, then their combined resistance R is given by the formula 1 R = 1 R R R R2 a. Express R as a simplified rational expression. b. Evaluate the rational expression if R1 = 4 ohms and R2 10 ohms.
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