Step-2

Title: The arithmetic progression of the terms

Grade: 9-a Lesson: S4-L4

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step Type Explanation Answer

1

Problem

Find the 14th term for the given AP: 1, 3, 5, 7, …​.

2

Step

Given AP: 1, 3, 5, 7, …​.

3

Clue

Given

\$ a = 1, n = 14\$

4

Formula:

Common difference

\$ d = a_2 - a_1 = 3 - 1 = 2\$

5

Formula:

The Arithmetic Progression formula

\$ a_n = a + (n-1)d\$

6

Hint

Substitute \$a,d,n\$ values in formula

\$ a_14 = 1 + (14 - 1)2\$

7

Step

After simplification we get

\$ a_14 = 1 + 13 \times 2\$

8

Step

After simplification we get

\$ a_14 = 1 + 26\$

9

Step

After simplification we get

\$ a_14 = 27\$

10

Answer

B

Tutor: Questions

Seq Type Question Audio

1

Problem

What did you learn from this problem?

2

Clue

What did you learn from the clues?

3

Hint

What did you learn from the Hints?

4

Step

What did you learn from the Steps?

5

Step

How can we improve the Steps?


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