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OpenStudy (anonymous):
whats the common ratio of -4,8,-16,32,...
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OpenStudy (anonymous):
to find the common ratio, take the second term and divide it by the first term 8 / -4 = -2 and you will notice that if you multiply one number by -2, you will get the next number.
OpenStudy (anonymous):
-64,128,-256,512,-1024& so on
OpenStudy (anonymous):
-2 is common Its an A.P.
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