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Step-by-step explanation:

The Logarithm Function

The sound level is usually calculated as a logarithm by the formula:

Where

I   = Sound intensity in W/square meter

Io = Smallest sound intensity that can be heard.

The blue whale can emit a sound of I=106.8 W/square meter, thus the sound level is:

8y^50

step-by-step explanation:

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2