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zheka24 [161]
3 years ago
8

Write an equation for the nth term of the geometric sequence: 4, 8, 16 . . .​

Mathematics
1 answer:
kogti [31]3 years ago
7 0

nth term for the geometric sequence 4,8,16,... is a_n=4(2)^{n-1}

Step-by-step explanation:

We need to write an equation for the nth term of the geometric sequence: 4, 8, 16 . . .​

The formula to find the nth term of geometric sequence is

a_n=a_1r^{n-1}

Where a_n is nth term

a_1 is 1st term

and r is common ratio

Finding a_1 and r in the sequence 4,8,16,...

a_1=4\\r=\frac{a_2}{a_1}\\r=\frac{8}{4}\\r=2

So, common ratio r is: 2 and a_1 is 4

The nth term is:

a_n=4(2)^{n-1}

So, nth term for the geometric sequence 4,8,16,... is a_n=4(2)^{n-1}

Keywords: Geometric sequence

Learn more about Geometric sequence at:

  • brainly.com/question/1522572
  • brainly.com/question/2491745
  • brainly.com/question/3280369

#learnwithBrainly

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