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777dan777 [17]
3 years ago
15

What is the 20th term in the sequence. f(n) = 9n - 12

Mathematics
1 answer:
Lerok [7]3 years ago
6 0

Answer:

f(20) = 168

Step-by-step explanation:

To find the 20th term, substitute n = 20 into f(n) , that is

f(20) = 9(20) - 12 = 180 - 12 = 168

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In this problem, the dimensions are:

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Hence the surface area of the rectangular prism is:

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<h3>What is the surface area of a cube?</h3>

The surface area of a cube of side length l is given by:

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In this problem, we have that l = 7 m, hence the surface area is:

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