Sound level is measured in <u>  decibels  </u> (dB). 
The equation  , where
, where  is the intensity of the <u>   threshold  </u> sound a human can hear (
 is the intensity of the <u>   threshold  </u> sound a human can hear ( 
  /
/ ) and
) and  is the <u>   intensity    </u> of the sound being measured, gives the sound level,
 is the <u>   intensity    </u> of the sound being measured, gives the sound level, 
Example:
What was the intensity of the launch of NASA's Saturn V rocket, about 200 dB?

 
        
             
        
        
        
Answer:
x = 2
Step-by-step explanation:
½ = 50%
⅔ = 66.67%
80%
Hopefully, this helps! The numbers range from least (50%) to greatest (80%).
 
        
             
        
        
        
Tayler money ................... 320$
Estimated cost per chair....80$
Friend's chairs..................3
Total chairs..........> cc
cc = 320$/80$ +3
cc = 4 + 3 = 7 chairs
        
                    
             
        
        
        
Answer:
QR = 54 cm 
SR = 27 cm 
plz mark my answer brainlist plzzzz 
 
        
             
        
        
        
62 cm. plug in 4 for x. 2(5(4)-2))+2(3(4)+1))= 2(18)+2(13)= 36+26=62. Hope this helps!