Evalue f(x)=(-2)^2-3(-2)+5/(-2)^2+1
1 answer:
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For this case we have the following equation:
Where,
I: <span>the intensity of a given sound
I0: </span><span> the threshold of a hearing intensity
</span>Substituting values in the given equation we have:
<span />
<span />Rewriting the equation we have:
<span />
<span />Then, by properties of logarithm we have:
<span />
<span />Finally we have:
<span />
<span />Answer:
T<span />he intensity, in decibles, [I(dB)], when I=10^8(I0) is:
D.80
Where,
I: <span>the intensity of a given sound
I0: </span><span> the threshold of a hearing intensity
</span>Substituting values in the given equation we have:
<span />
<span />Rewriting the equation we have:
<span />
<span />Then, by properties of logarithm we have:
<span />
<span />Finally we have:
<span />
<span />Answer:
T<span />he intensity, in decibles, [I(dB)], when I=10^8(I0) is:
D.80