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Lesson Example Discussion Quiz: Class Homework

Step-3

Title: The n^(th) term of the arithmetic progression

Grade: 9-a Lesson: S4-L1

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

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Find the value of n,If \$ a = 2 , d = 3 ,a_n = 71 \$
2	Step	The given values	\$ a = 2 , d = 3 ,a_n = 71 \$
3	Formula:	The Arithmetic Progression formula	\$ a_n = a + (n-1)d\$
4	Hint	Substitute \$a,d,a_n\$ values in formula	\$ 71 = 2 + (n-1)3\$
5	Step	After simplification we get	\$ 71 = 2 + 3n - 3\$
6	Step	After simplification we get	\$ 71 = 3n - 1\$
7	Step	After simplification we get	\$ 3n = 71 + 1\$
8	Step	After simplification we get	\$ 3n = 72\$
9	Step	After simplification we get	\$ n = \cancel72^(24)/\cancel3^1\$
10	Step	The value of n is	24
11		Answer	B

Step

Type

Explanation

Answer

Problem

Find the value of n,If \$ a = 2 , d = 3 ,a_n = 71 \$

Step

The given values

\$ a = 2 , d = 3 ,a_n = 71 \$

Formula:

The Arithmetic Progression formula

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

Hint

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

\$ 71 = 2 + (n-1)3\$

Step

After simplification we get

\$ 71 = 2 + 3n - 3\$

Step

After simplification we get

\$ 71 = 3n - 1\$

Step

After simplification we get

\$ 3n = 71 + 1\$

Step

After simplification we get

\$ 3n = 72\$

Step

After simplification we get

\$ n = \cancel72^(24)/\cancel3^1\$

Step

The value of n is

Answer

Tutor: Questions

Seq	Type	Question
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?

Seq

Type

Question

Audio

Problem

What did you learn from this problem?

Clue

What did you learn from the clues?

Hint

What did you learn from the Hints?

Step

What did you learn from the Steps?

Step

How can we improve the Steps?