Answer:
50.26 in
Step-by-step explanation:
First you need the circumference of half of a circle.
Circumference = diameter x pi. The radius is 9, so the diameter is 18. 18 * 3.14 = 56.52. But you need half of that, so 56.52 / 2 = 28.26
Then add the other 3 sides
28.26 + 5 + 12 + 5 = 50.26
Answer:
12.683%
Step-by-step explanation:
The effective annual rate is given by ...
(1 +r/n)^n -1
where r is the nominal annual rate, and n is the number of compoundings per year. Filling in the given numbers, we have ...
effective rate = (1 +0.12/12)^12 -1 ≈ 0.12683 = 12.683%
Answer: In 2008 the population was 21,525,144
Step-by-step explanation:
You need to use the following formula for Exponential decay:
Where is the initial population in the year 0, is the rate of decay and is the time.
In this case, you can identify that:
Therefore, substituting these values into the formula for Exponential decay, you get:
Then, in 2008 the population was 21,525,144