Question 438790: the average(mean) of two numbers is A. If one number is x, what is the other number written as an mathematical expression of A and x Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! the average(mean) of two numbers is A. If one number is x, what is the other number written as an mathematical expression of A and x
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Let the other number be "k":
Equation:
(x+k)/2 = A
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x+k = 2A
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k = 2A-x
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Cheers,
Stan H.
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