Answered

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What’s the answer?????

Whats The Answer class=

Sagot :

stu107632

Answer:

324

Step-by-step explanation:

a

2

a

1

=

12

4

=

3

a

3

a

2

=

36

12

=

3

⇒

common ratio

=

r

=

3

and first term

=

a

1

=

4

no: of terms

=

n

=

9

Sum of geometric series is given by

S

u

m

=

a

1

(

1

−

r

n

)

1

−

r

⇒

S

u

m

=

4

(

1

−

3

9

)

1

−

3

=

4

(

1

−

19683

)

−

2

=

−

2

(

−

19682

)

=

324

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