Use the four-step procedure for solving variation problem to solve: y varies directly as x and inversely as the square of z. y = 20 when x = 50 and z = 5. Find y when x = 3 and z = 6.

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter5: Polynomial And Rational Functions
Section: Chapter Questions
Problem 26PT: Find the unknown value. y varies inversely as the square of x and when x=3,y=2. Find y if x=1.
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Use the four-step procedure for solving variation problem to solve: y varies directly as x and inversely as the square of z. y = 20 when x = 50 and z = 5. Find y when x = 3 and z = 6.

Expert Solution
Step 1

Given that, y varies directly as x and inversely as the square of z

so,

Calculus homework question answer, step 1, image 1

Where k=constant

 

 

Step 2

Given that y = 20 when x = 50 and z = 5

Using that we find k

Calculus homework question answer, step 2, image 1

 

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