If we take 12 to be the 100%, now 15 - 12, so is 3 bucks up for the retail price, what is 3 off 12 in percentage then?
Answer:
We can use three solution and they are
(1)completing the square
(2)quadratic formula
(3) factorisation method
In order to calculate the mean (average) you add up all the numbers and divide the total by how many numbers there are.
The sum of the data set is 468.
There are 5 numbers in the set.
468 divided by 5 is 93.6.
The answer is already to the nearest tenth, so the mean is 93.6.
The line would lie on the same line as original but it will be 1/2 the length
