Answer:
n=3/4,-5/3
Step-by-step explanation:
Answer:
The decibel level of this second sound is 48.021 decibels.
Step-by-step explanation:
The acoustic intensity (), measured in decibels, is defined by the following formula:
(1)
Where:
- Reference sound intensity, measured in watts per square meter.
- Real sound intensity, measured in watts per square meter.
If we know that and , then the real sound intensity of the first sound is:
The real sound intensity of the second sound is four times greater, that is:
If we know that and , then the acoustic intensity of the second sound is:
The decibel level of this second sound is 48.021 decibels.
The answer is B.
a) pi + 1 = 4.14
b) square root of 24 = 4.89
c) 9/2 = 4.5
d) 4.2 = 4.2
Therefore 4.89 is the greatest number.
Hope this helps:)
Answer:
1/15
Step-by-step explanation:
15 quarters= $3.75
21 nickels =$1.05
______________
36 coins = $4.80