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Nataly_w [17]
3 years ago
15

the decibel level of sound is 50dB greater on a busy street than in a quiet room where the intensity of sound is 10^-10 watt/m^2

. The intensity of sound in the busy street is watt/m^2?
Mathematics
1 answer:
JulijaS [17]3 years ago
7 0

Answer:

The decibel level of sound is 50dB greater on a busy street than in a quiet room where the intensity of sound is 10^-10 watt/m^2. The intensity of sound in the busy street is watt/m^2?

Step-by-step explanation:

Ok this is the best i've got.

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Which function has an inverse that is also a function? a {(–1, 3), (0, 4), (1, 14), (5, 6), (7, 2)} b {(–1, 2), (0, 4), (1, 5),
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and expression that is a function, and has an inverse that is also a function, will have no x-repeats, and no y-repeats either, so the pairs will be unique for the set, let's do some checking then,

\bf a \qquad\{(-1, 3), (0, 4), (1, 14), (5, 6), (7, 2)\}\\\\
b \qquad\{(-1, 2), (0, \stackrel{\downarrow }{4}), (1, 5), (5, \stackrel{\downarrow }{4}), (7, 2)\}\impliedby 
\begin{array}{llll}
\textit{notice the } y-rep eats\\
\textit{thus, no dice}
\end{array}

\bf c \qquad\{(-1, -2), (0, \stackrel{\downarrow }{4}), (1, 3), (5, 14), (7, \stackrel{\downarrow }{4})\}\impliedby 
\begin{array}{llll}
\textit{notice the } y-rep eats\\
\textit{thus, no dice}
\end{array}\\\\
d \qquad\{(-1, \stackrel{\downarrow }{4}), (0, \stackrel{\downarrow }{4}), (1, 2), (5, 3), (7, 1)\}\impliedby 
\begin{array}{llll}
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Answer:

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if you want explanation you can comment down

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