The loudness, l, measured in decibels (db), of a sound intensity, i, measured in watts per square meter, is defined as where and is the least intense sound a human ear can hear. jessica is listening to soft music at a sound intensity level of 10-9 on her computer while she does her homework. braylee is completing her homework while listening to very loud music at a sound intensity level of 10-3 on her headphones. how many times louder is braylee's music than jessica's?

Barlyee's music is 3 times louder than Jessica's.

Step-by-step explanation:

We know that, loudness is measured as,

So let us measure the loudness of music that Jessica is listening to,  

So Jessica is listening to music at 30dB.

And the loudness of music that Barylee is listening to,

So Barylee is listening to music at 90dB.

Therefore, the music that Barylee is listening to, is 3 times louder than the music Jessica is listening to.

i really dont know

step-by-step explanation:

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

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