Answer:
Amount = $11025
Interest = $1025
Step-by-step explanation:
Amount in a compound interest is given by
where P is the principal, R is the rate and T is the time.
The interest is compunded quarterly i.e. 4 times a year. Hence its rate per quarter will be 20% ÷ 4 = 5%.
The principal is compunded for six months which is 2 quarters. Therefore, T = 2.
The interest is A - P = 11025 - 10000 = $1025
Area of parallelogram = AB= 24*18 = 432
Area of unshaded square = a*a = 12*12 = 144
Area of shaded = 432-144 = 288
<h3>Answer: Statistic</h3>
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Explanation:
The fact that we have the phrasing "randomly-selected" in there is a big clue that we are working with a sample, and not a population. If 40 people represented the population, then we wouldn't be randomly selecting anyone. Everyone would be surveyed. No random process needed. We don't need to worry about the order of those surveyed.
However, we are applying a random selection process to form this sample. A <u>statistic</u> is some value that measures a sample. For instance, xbar is the sample mean which is a sample statistic. The xbar value estimates mu, which is a greek letter. Mu is the population mean and a population parameter.
To remember the difference between the two terms parameter and statistic, one useful memory trick is to think of it like this:
- <u>Statistic</u> and sample both start with s
- Population and parameter both start with p
As the name "statistics" implies, it is the study of how to estimate a population based on a sample. After gathering the sample, we compute a statistic, which in turn estimates a parameter. So that explains why your math course and textbook has that label.
(-2ab + 6a - 6 ) - (-4ab - 6)= ***at this step you have to distribute the negative sign
=-2ab + 6a - 6 +4ab + 6
= 2ab + 6a
hope this helps
25 hours because 326+49 is 375 over 15 is 25 hours