College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter2: Functions And Graphs
Section2.6: Proportion And Variation
Problem 17E: Find the constant of proportionality. y is directly proportional to x. If x=30, then y=15.
Related questions
Question
Two circles, C1 and C2, are drawn such that the area of the first, A1, exceeds the area of the second, A2, by 9π cm2.
A.Write down an equation for the radius of the second circle, r2, in terms of the radius of the first circle, r1.
b and c in image.
Transcribed Image Text:Show that dri
r2 dr2
r₁ dt.
=
dt
dr₂
5 If r₁(t) = t², what is de when A₁ = 4A₂?
dt
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