Answer:
D
Step-by-step explanation:
loudness depends on the amplitude or height of the sound waves
Answer:
B
Step-by-step explanation:
Let me know if you need an explanation.
Answer:
5 hours
Step-by-step explanation:
First, add the miles together
Next, divide 65 into the sum of 227.5 and 97.5(which is 325)
Answer:
14/38
21/57
Step-by-step explanation:
You just multiply by 2/2 and 3/3
Answer:
1 ) sin 165°
2 ) cos 330°
3 ) Tan 157.5°
4 ) 
Step-by-step explanation:
1 )
Given expression is 
We know that 


So the first expression is sin (330/2)° =sin 165°
2 )
GIven expression is 
We know that 
So the result is cos 330°
3 )
Given expression is 
We know that 
Also we know that sin2x = 2sinxcosx
So The numerator becomes
. and the denominator becomes as 

So the result is Tan 157.5°
4 )
Given expression is 
We know that 

So the result is 