Answer:
The value of A is 1, D is 0, E is -2 and F is 0.
Step-by-step explanation:
The given equation is
...(1)
The standard form of the circle is

Where, (h,k) is the center of the circle and r is the radius.



It can be written as
....(2)
On comparing (1) and (2) we get.




Therefore the value of A is 1, D is 0, E is -2 and F is 0.
First, lets find how many miles the cyclist can ride per minute (speed = distance/time).
18/45 = 0.4 miles per minutes
Second, lets find how many miles the cyclist can ride per hour.
0.4 * 60 = 24 miles per hour
Third, lets find how many miles teh cyclist can ride in 6 hours.
24 * 6 = 144 miles in 6 hours
Best of Luck!
The correct answers are
a) 40%
b) 30%
I think you mean what's the name of it,
they are called ordered points.