4 years ago

The graphs of two functions are shown. Which statements accurately compare the functions in the graph? Select two options

Mathematics

1 answer:

Andru [333]4 years ago

5 0

Answer:

Step-by-step explanation:

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The frequency of a radio wave varies inversely with its wavelength. If a 100-meter wave has a frequency of 3,000 kilohertz, what

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$\bf \qquad \qquad \textit{inverse proportional variation}
\\\\
\textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad y=\cfrac{k}{x}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------$

$\bf \textit{frequency varies inversely with its wavelength}\qquad f=\cfrac{k}{w}
\\\\\\
\textit{we also know that }
\begin{cases}
w=100\\
f=3000
\end{cases}\implies 3000=\cfrac{k}{100}
\\\\\\
300000=k\qquad thus\qquad \boxed{f=\cfrac{300000}{w}}
\\\\\\
\textit{now, when f = 500, what is \underline{w}?}\qquad 500=\cfrac{300000}{w}
\\\\\\
w=\cfrac{300000}{500}\implies w=600$

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