The only point which would touch all quadrants and both axes is (0,0), as it is in the dead center of the plane.
The answer for the problem is A.
The researchers used data from 10 trials so they could compare each trial or use the information in all, its better to use more than one so you can compare and see the difference.
Answer:
8.2 minutes
Step-by-step explanation:

492 seconds = 8.2 minutes
Answer:
diameter
circumference

diameter
Step-by-step explanation:
First, find the length of the diameter (d) and the length of the circumference of the circle (c).
Next, divide the length of the circumference c by the length of the diameter d and set up an equation

where the ratio equals to
(the definition of
)
Then, solve the equation for the circumference c:

Finally, substitute 2 times the radius for the diameter
