Triangle A B C is reflected across line m to form triangle A prime B prime C prime. Triangle A prime B prime C prime is rotated
1 answer:
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Answer:
Step-by-step explanation:
we know that
<u><em>Combinations</em></u> are a way to calculate the total outcomes of an event where order of the outcomes does not matter.
To calculate combinations, we will use the formula
where
n represents the total number of items
r represents the number of items being chosen at a time.
In this problem
substitute
simplify
As the problem states, to solve this, we are going to use the equation 
where
is the loudness in dB
is the intensity of a sound
<span>is the minimum intensity detectable by the human ear
</span>
We know for our problem that
; we also now that the minimum intensity detectable by the human ear is 
, so 
. Lets replace those values in our equation to find :
Qe can conclude that since the explosion is under 100dB, it does not violates the regulation of the town. We used tow physical values to calculate the answer: the intensity of the sound of the explosion,
, and the minimum intensity detectable by the human ear 
.
where
</span>
We know for our problem that
Qe can conclude that since the explosion is under 100dB, it does not violates the regulation of the town. We used tow physical values to calculate the answer: the intensity of the sound of the explosion,