It is B. Just did the Quiz on Intro to Business
Answer:
the orbits of the planets are elliptical
the sun is the center of the solar system
includes 9 planets
Answer:
Speed= 6cm/s and velocity= 6cm/s in the negative direction
Explanation:
the change in position is from 45cm to 27 cm (moving towards the negative x direction)

And the change in time:

Now we must define the difference between speed and velocity:
Speed is a scalar quantity, which means that it is a number. Velocity is also a number but you must also indicate the direction of the movement.
Thus, the speed is:

An the velocity is:
6cm/s in the negative direction
It’s really C of the most mataboliza
A would be most useful (Carbon dating)