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OpenStudy (anonymous):
he average of 3 numbers is 27. If a 4th number is added the new average is 22. What number was added?
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OpenStudy (anonymous):
the answer is 7
OpenStudy (anonymous):
Angles X and Y are congruent. and . Find the degree measure of angle X.
OpenStudy (anonymous):
thaT makes no sense is that all the info
OpenStudy (whpalmer4):
if the average of the 3 numbers is 27, we can pretend that the numbers were each 27 — 3 27s obviously average out to 27, right? then we have (27 + 27 + 27 + x) / 4 = 22 81+x = 88 x = 88-81 x=7
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