SOLUTION: If (x+y)^2=200 and (x-y)^2=100 what is the average of x and y?
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Question 1128638
:
If (x+y)^2=200 and (x-y)^2=100 what is the average of x and y?
Answer by
ikleyn(52800)
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put this solution on YOUR website!
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If
= 200, then x+y = +/-
= +/-
. Then the average of x and y is
= plus OR minus
.
ANSWER
The rest of the condition is IRRELEVANT and does not influence or change the answer.
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