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Mathematics 19 Online
OpenStudy (anonymous):

What is the missing term, x, in the pattern below? –3, x, –12, 24, –48 A. –2 B. 6 C. 4 D. –6

hartnn (hartnn):

what do u think?

OpenStudy (anonymous):

hmmm D

hartnn (hartnn):

close! but if you notice, the signs are alternate! - , + , - , + , ... so the missing number is actually positive!

OpenStudy (anonymous):

BBBBBB

hartnn (hartnn):

yep :)

OpenStudy (anonymous):

yeahhhh your awesome i will fan you

OpenStudy (triciaal):

first this is a geometric progression do you see -48/24 = 24/-12 for the ratio

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