Answer:
A crest is the highest point of a wave.
A trough is the lowest point of a wave.
Infrasound is sound below the limit that humans can hear, below 20 Hz.
Ultrasound is sound above the limit that humans can hear, above 20,000 Hz.
<span> 5.927 × 10<span>^-3 is your answer</span></span>
B. When the sky is cloudy it rains.
I hope this helps:)
Answer:

Step-by-step explanation:
To find the inverse of a function, what I like to do is to switch the places of x and y, and then try to isolate y again like so:



Hope this helps!
Answer:
Yes
Step-by-step explanation:
Yes,the area is the space inside a shape. If we change the borders of the shape, in space in the interior will change.