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Mathematics 21 Online
OpenStudy (petiteme):

The first term of a geometric sequence is 192 and the fifth term is 0.75. What is the common ratio? A. 4 B. 0.5 C. 0.25 D. 0.125

OpenStudy (campbell_st):

well any term is \[a_{n} =a r^{n -1}\] and you know \[0.75 = 192 \times r^{5-1}\] just solve for r

OpenStudy (petiteme):

thanks :)

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