Calculate the 5th Element Using the Term-to-Term Rule: 2n + 2

A sequence has the following term-to-term rule:

2n+2 2n+2

What is the value of the 5th element in the sequence?

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Step-by-step video solution

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00:00 Find the 5th term in the sequence
00:03 Location of the desired term according to the given data
00:11 Insert the appropriate position in the formula and solve to find the term
00:16 Always solve multiplication and division before addition and subtraction
00:23 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

A sequence has the following term-to-term rule:

2n+2 2n+2

What is the value of the 5th element in the sequence?

2

Step-by-step solution

To solve this problem, we'll follow these steps:

  • Step 1: Substitute the position number into the sequence rule.
  • Step 2: Simplify the expression to find the specific term's value.

Now, let's work through each step:
Step 1: With the term-to-term rule given as 2n+2 2n + 2 , we substitute n=5 n = 5 .
a5=2(5)+2 a_5 = 2(5) + 2

Step 2: Perform the calculations:
a5=10+2=12 a_5 = 10 + 2 = 12

Therefore, the value of the 5th element in the sequence is 12 12 .

3

Final Answer

12 12

Practice Quiz

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Is there a term-to-term rule for the sequence below?

18 , 22 , 26 , 30

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