The area of a circle:
r - the radius, which is equal to half the diameter d
The first circle:
The second circle:
the second circle has a diameter that is four times the diameter of the first circle.
The ratio of the area of the smaller cirlce to the area of the larger circle:
The ratio is 1:16.
Answer:
b. 6.2
Step-by-step explanation:
x =√18.2²-17.1² =√331.24- 292.41
= √38.83 = 6.2
1. You want to get one variable by itself, in this case Y in the first one is easier. You would get y = -5x -2, so you substitute that in for Y in the second equation
You have to use the formula for simple interest.
(Investment) * (1 + (intrest rate))^(number of periods)
So:
200 * (1 + 0.05)^7 = 281.42 $