Well when u multiply 1 times something u get the same #
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Factorise a² - b² :
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Crossed out common factors, (x + a) :
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A common denominator is when the denominators (bottom number) of two fractions are the same. Fractions must have a common denominator to be added or subtracted.
A common multiple is when two numbers can be multiplying to the same number. Ex) A common multiple of 3 & 4 is 12
A common multiple of 6 & 2 is 18
You would need to know the common multiples of numbers in order to make fractions have a common denominator.
Do the equations and keep the (x) unless it is by itself. If it is by itself it equals 1 then you continue with the problems.
The correct answer is A $152.50 if you add up all of the numbers then divide by the total amount of numbers then you have your answer also known as the mean of the data
