Answer:
amplitude = 3
Step-by-step explanation:
the amplitude is the vertical distance from center of the wave to the crest or the trough

<h3>
Step-by-step explanation:</h3>
Yes, it's true sometimes we don't use negative value of 'x'.
So, we conclude it's True.
<h3>
Hope it help you</h3>
It’s corresponding angles
Step-by-step explanation:
2 days=22 sit ups
1 day=22/2 sit ups
6 days=22/2×6 sit ups
=66 sit ups