Give me the next 2nd to 5th term of every 5 each Finite Sequence with the common difference of 4. Whose the First term of every 5 each sequence starts with the term of 3, 6, 9, 12, and 15. Prove the problem with significant explanation.

Part 2: Formula and Equation of Arithmetic Sequence Problem 1.​


Sagot :

Step-by-step explanation:

Terms of Sequence:

A1 (read as a sub 1)

- represents the First term of the Sequence

A2 (read as a sub 2)

- represents the Second term of the Sequence

A3 (read as a sub 3)

- represents the Third term of the Sequence

A4 (read as a sub 4)

- represents the Fourth term of the Sequence

A5 (read as a sub 5)

- represents the Fifth term of the Sequence

An (read a a sub n)

- represents the nth term or the last term of the Sequence

Given:

Common Difference "d": 4

First Sequence: A1 = 3

Second Sequence: A1 = 6

Third Sequence: A1 = 9

Fourth Sequence: A1 = 12

Fifth Sequence: A1 = 15

Unknown:

First Sequence: {3, __, __, __, __}

Second Sequence: {6, __, __, __, __}

Third Sequence: {9, __, __, __, __}

Fourth Sequence: {12, __, __, __, __}

Fifth Sequence: {15, __, __, __, __}

Step by step procedure to know the importance:

1.) First Sequence: {3, __, __, __, __}

Solve:

• = 3

• 3 + 4 = 7

Answer: {3, 7, __, __, __}

Checking if the common difference is correct:

Given: Finding Common Difference.

Formula: An = A1 + (n - 1) d

Substitute: 7 = 3 + (2 - 1) d

n = 2th

An = 7

A1 = 3

d = ?

Solving:

An = A1 + (n - 1).d

7 = 3 + (2 - 1).d

7 = 3 + 1d

7 - 3 = 1d

4/1 = 1d/1

4 = d

Given: Finding the 3rd term, 4th term, and 5th term.

Formula: An = A1 + (n - 1) d

Substitute:

A3 = 3 + (3 - 1).4

A4 = 3 + (4 - 1).4

A5 = 3 + (5 - 1).4

An = 3th, 4th, 5th

A1 = 3

n = 3th, 4th, 5th

d = 4

A3 = ?

A4 = ?

A5 = ?

Solving:

1.)

An = A1 + (n - 1).d

A3 = 3 + (3 - 1).4

A3 = 3 + (2).4

A3 = 3 + 8

A3 = 11

2.)

An = A1 + (n - 1).d

A4 = 3 + (4 - 1).4

A4 = 3 + (3).4

A4 = 3 + 12

A4 = 15

3.)

An = A1 + (n - 1).d

A5 = 3 + (5 - 1).4

A5 = 3 + (4).4

A5 = 3 + 16

A5 = 19

Answers: {3, 7, 11, 15, 19}

Thank you, that's all for these simple explanation.

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For more information about Arithmetic Seqeunce.

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