3. The frequency of a radio signal varies inversely as the wave length. A signal of frequency 1200 kilohertz (kHz), which might be the frequency of an AM radio station, has a wave length 250 m. What frequency has a signal of wave length of 400 m?

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 11P
Question
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3. The frequency of a radio signal varies inversely as the wave length. A signal of frequency 1200
kilohertz (kHz), which might be the frequency of an AM radio station, has a wave length 250 m.
What frequency has a signal of wave length of 400 m?
Transcribed Image Text:3. The frequency of a radio signal varies inversely as the wave length. A signal of frequency 1200 kilohertz (kHz), which might be the frequency of an AM radio station, has a wave length 250 m. What frequency has a signal of wave length of 400 m?
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