Answered

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Which geometric sequence has a common ratio of -9? (only one is correct)

a) {-1, -9, 81, 729, …}

b) {-9; -81; -729; -6,561; …}

c) {1, -9, 81, -729, …}

d) {81; 729; 6,561; 59,049; …}

Sagot :

ouff2003

C

1, -9 , 81 , -729 .....

ratio :-

R1 = -9/1 = -9

R2 = 81/-9 = -9

R3 = -729 / 81 =-9

so ,. R1= R2= R3

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