So first you start with finding 30%, and you do this by entering into a calculator 30 divided by 100 and then times it to the original book price. So:
30 divided by 100 x 15.40 = $4.62
So $4.62 is 30%, meaning all you have to do is take the original price of $15.40 and add the $4.62, so:
$15.40+$4.62= $20.02
Answer:
The area inside the running track is 248.5 m².
Step-by-step explanation:
The area inside the running track is given by the sum of the area of a rectangle and the area of a semicircle:
Where:
x: is one side of the rectangle = 30 m
r: is the radius = half of the other side of the rectangle = 7/2 m = 3.5 m
Hence, the total area is:
Therefore, the area inside the running track is 248.5 m².
I hope it helps you!
Your answer would be 4.
If we substitute in x = -8 and y = -4 into the expression, we get:

This then becomes:
=
= 4.
I hope this helps!
Answer: x=10
This is the answer I got.
The answer is A.
This is saying 5E-9/2E4, so it equals 2.5E-13.