The answer is B.
When we multiply by 1000, we move the decimal place 3 times to the right(or add 3 zeroes).
Just count the number of zeroes and move it that many places to the right(if it starts with '1').
Answer:
There are a lot of turning point in the history of algebra one of those is the discovery of the plain and the quadrants by Rene Descartes. This discovery paved way to a lot of knowledge which was later on use in solving other complicated mathematical problems.
Step-by-step explanation:
The mean of the data set is 81.6.
The median of the data set is 80.
<h3>What is mean?</h3>
The mean is the average of a data set. Therefore,
Mean = (70 x 2 + 75 x 8 + 80 x 6 + 85 x 3 + 90 x 9) / 28 = 81.6.
Hence,
mean = 81.6
<h3>What is a median?</h3>
Median is a statistical measure that determines the middle value of a dataset listed in ascending order .
Therefore,
28 / 2 = 14
median = 80 + 80 / 2 = 160 / 2 = 80
learn more on mean and median here: brainly.com/question/28052298
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