mikaiyaholukoya
Answered

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Sagot :

raphealnwobi

Answer:

The answer is below

Step-by-step explanation:

The nth term of a geometric sequence is given as:

[tex]a_n=ar^{n-1}\\\\where\ a=first\ term,a_n=nth\ term, r=common\ ratio=\frac{a_n}{a_{n-1}}[/tex]

9)

a = -4, r = 12 / -4 = -3

10)

a = -2, r = -8 / -2 = 4

[tex]a_{8}=-2*(4)^{8-1}=-2*(4)^{7}=-32768[/tex]

11)

a = -1, r = -5

[tex]a_{9}=-1*(-5)^{9-1}=-1*(-5)^{8}=-390625[/tex]

12)

a = -1, r = -2

[tex]a_{12}=-1*(-2)^{12-1}=-1*(-2)^{11}=2048[/tex]

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