Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 11 - Rational Expressions and Functions - 11-6 Inverse Variation - Lesson Check - Page 702: 2


x = 120 lbs

Work Step by Step

The weight of an object on a lever and its distance from the fulcrum is in an inverse variation. That is, the product of the weight of an object and its distance from the fulcrum is always a constant. Therefore, if we let x be the number of pounds of the object 6 ft away from the fulcrum, the equation we can use is 80 · 9 = x · 6. 80 · 9 = x · 6 720 = 6x x = 120
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