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OpenStudy (anonymous):
In set D above,what is the value of X if the average of the five numbers is 8? set D(9,11,6,X,X) a)4 b)7 c)8 d)10 e)14 ??
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OpenStudy (angela210793):
(26+2x)/5=8 26+2x=40 2x=14 x=7
OpenStudy (anonymous):
thanks,now i am feeling ok.....
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