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R varies jointly as M, and M, and inversely as d. a) Write the variation equation. b) If R is 70 when M, = 2, and M, = 40, and d 0.4, find R when M, = 40, %3D a) Choose the correct answer below. O A. R=kdM, M2, where k is the constant of proportionality kM, M2 О В. R%3D where k is the constant of proportionality kd where k is the constant of proportionality %3D M, M2 kM, where k is the constant of proportionality dM2 ' O D. R= %3D b) R= (Simplify your answer.)

R varies jointly as M, and M, and inversely as d. a) Write the variation equation. b) If R is 70 when M, = 2, and M, = 40, and d 0.4, find R when M, = 40, %3D a) Choose the correct answer below. O A. R=kdM, M2, where k is the constant of proportionality kM, M2 О В. R%3D where k is the constant of proportionality kd where k is the constant of proportionality %3D M, M2 kM, where k is the constant of proportionality dM2 ' O D. R= %3D b) R= (Simplify your answer.)

Algebra: Structure And Method, Book 1
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter12: Quadratic Functions
Section12.8: Joint And Combined Variation
Problem 11OE
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R varies jointly as M, and M2 and inversely as d. a) Write the variation equation. b) If R is 70 when M, = 2, and M, = 40, and d = 0.4, find R when M, = 40, M, = 70, and d = 0.8. %3D %3D %3D %3D a) Choose the correct answer below. O A. R= kdM, M2, where k is the constant of proportionality kM, M2 O B. R=- where k is the constant of proportionality kd Oc. R- M, M2 where k is the constant of proportionality O D. R- dM2 kM, where k is the constant of proportionality b) R = (Simplify your answer.) d.
Transcribed Image Text:R varies jointly as M, and M2 and inversely as d. a) Write the variation equation. b) If R is 70 when M, = 2, and M, = 40, and d = 0.4, find R when M, = 40, M, = 70, and d = 0.8. %3D %3D %3D %3D a) Choose the correct answer below. O A. R= kdM, M2, where k is the constant of proportionality kM, M2 O B. R=- where k is the constant of proportionality kd Oc. R- M, M2 where k is the constant of proportionality O D. R- dM2 kM, where k is the constant of proportionality b) R = (Simplify your answer.) d.
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