Asked by HORLUWALOKEMISOLAR

THE 8TH TERM OF A GP=-7/32 FIND IT'S COMMON RATIO,IF IT'S 1ST TERM IS 28
Answered by Reiny
8th term of GP is -7/32 ----> ar^7 = -7/32
but a = 28

28r^7 = -7/32
r^7 = -7/896 = -1/128

take it from here ,

hint: what number raised to the 7th is 128, it will be the first simple number you'll try.
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