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12345 [234]
2 years ago
5

Find the 12th term in the following geometric sequence. 0.75, 1.5, 3, 6, . . .

Mathematics
2 answers:
Colt1911 [192]2 years ago
7 0

Answer:

1536

Step-by-step explanation:

Given : A geometric sequence 0.75, 1.5, 3, 6, . . .

To Find:Find the 12th term

Solution:

0.75, 1.5, 3, 6, . . .

First term =a = 0.75

Common difference = r = \frac{a_3}{a_2} =\frac{a_2}{a_1}=\frac{1.5}{0.75}=\frac{3}{1.5}=2

nth term of G.P. = a_n=a r^{n-1}

Where a = First term = 0.75

r = common difference = 2

Substitute n = 12

a_{12}= 0.75 (2)^{12-1}

a_{12}= 0.75 (2)^{11}

a_{12}= 1536

Hence the 12th term in the geometric sequence. 0.75, 1.5, 3, 6, . . . is 1536.

Zinaida [17]2 years ago
4 0
The pattern doubles, .75 x 2= 1.5. 1.5 x 2= 3, and so on. so the answer would be 1,536
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Answer:

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Step-by-step explanation:

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2 years ago
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3 years ago
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