Check the picture below.
since the circle is centered at the (0,0) origin, and a point on it is at (0, -9), its radius is simple the distance between those two, or r = 9.
if the second point is also on the circle, it must also be 9 units away from the origin.

Answer:
a) 3.6 × 10²
Time = distance / speed
So time = 1.08 × 10⁸ / 3 × 10⁸
= 1.08 × 10¹¹ / 3 × 10⁸ ( converted 10⁸ km to meter )
= 1.08 × 10³ / 3
= 0.36 × 10³
. = 3.6 × 10²
Time = 3.6 × 10²
Answer: 1.75c + 1.75s
Step-by-step explanation:
The following can be deduced from the question:
Cost of either a can of gourmet chili = $1.75
Cost of a can of hearty soup = $1.75
c = the number of cans of chili purchased.
s = the number of cans of soup purchased.
To get the expression showing the total cost for the number of cans of chili and soup purchased,we multiply the the number of cans of chili purchased by 1.75 and also multiply the number of cans of soup purchased by 1.75. This will be:
= (1.75 × c) + (1.75 × s)
= 1.75c + 1.75s or 1.75(c+s)