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Identifying The Nth Term Of A Arithmetic Sequence

Identifying the $n$ th term of a sequence: {-1,4,-9,16,…}.

$a_n=2n+3$

$a_n=n-3$

$a_n=(-1)^nn^2$

Identifying the $n$ th term of a sequence: {0,1,1,2,3,…}.

$a_n=2n+3$

$a_n=a_{n-1}+a_{n-2}$

$a_n=(-1)^nn^2$

Given: a₁=-2, a₃₀=-89. What is d?

Identifying the $n$ th term of a sequence: {3,9,15,21,…}.

$a_n=2n+3$

$a_n=3+(n-1)6$

$a_n=2n+1$

What is the 1st term of the sequence whose 45th term is 120 and common difference is 7?

Identifying the $n$ th term of a sequence: {1,8,27,64,…}.

$a_n=n^3$

$a_n=a_{n-1}+a_{n-2}$

$a_n=(-1)^nn^2$

What is the 50th term of the sequence whose first term is 8 and common difference is 0.25?

Identifying the $n$ th term of a sequence: {1,2,3,4,…}.

$a_n=n$

$a_n=3+(n-1)6$

$a_n=2n+1$

What is the 7th term of the sequence whose first term is 2 and common difference is -3?

What is the 98th term of the sequence whose 20th term is 30 and common difference is 5?

Questions

Time

Score

Identifying The Nth Term Of A Arithmetic Sequence

Identifying the $n$ th term of a sequence: {-1,4,-9,16,…}.

$a_n=2n+3$

$a_n=n-3$

$a_n=(-1)^nn^2$

Identifying the $n$ th term of a sequence: {0,1,1,2,3,…}.

$a_n=2n+3$

$a_n=a_{n-1}+a_{n-2}$

$a_n=(-1)^nn^2$

Given: a₁=-2, a₃₀=-89. What is d?

Identifying the $n$ th term of a sequence: {3,9,15,21,…}.

$a_n=2n+3$

$a_n=3+(n-1)6$

$a_n=2n+1$

What is the 1st term of the sequence whose 45th term is 120 and common difference is 7?

Identifying the $n$ th term of a sequence: {1,8,27,64,…}.

$a_n=n^3$

$a_n=a_{n-1}+a_{n-2}$

$a_n=(-1)^nn^2$

What is the 50th term of the sequence whose first term is 8 and common difference is 0.25?

Identifying the $n$ th term of a sequence: {1,2,3,4,…}.

$a_n=n$

$a_n=3+(n-1)6$

$a_n=2n+1$

What is the 7th term of the sequence whose first term is 2 and common difference is -3?

What is the 98th term of the sequence whose 20th term is 30 and common difference is 5?

Incorrect

Great!

Questions

Time

Score

Identifying The Nth Term Of A Arithmetic Sequence

Identifying the ﻿nnn﻿th term of a sequence: {-1,4,-9,16,…}.

﻿an=2n+3a_n=2n+3an​=2n+3﻿

﻿﻿an=n−3a_n=n-3an​=n−3﻿

﻿an=(−1)nn2a_n=(-1)^nn^2an​=(−1)nn2﻿

Identifying the ﻿nnn﻿th term of a sequence: {0,1,1,2,3,…}.

﻿an=2n+3a_n=2n+3an​=2n+3﻿

﻿an=an−1+an−2a_n=a_{n-1}+a_{n-2}an​=an−1​+an−2​﻿

﻿an=(−1)nn2a_n=(-1)^nn^2an​=(−1)nn2﻿

Given: a1=-2, a30=-89. What is d?

Identifying the ﻿nnn﻿th term of a sequence: {3,9,15,21,…}.

﻿an=2n+3a_n=2n+3an​=2n+3﻿

﻿an=3+(n−1)6a_n=3+(n-1)6an​=3+(n−1)6﻿

﻿an=2n+1a_n=2n+1an​=2n+1﻿

What is the 1st term of the sequence whose 45th term is 120 and common difference is 7?

Identifying the ﻿nnn﻿th term of a sequence: {1,8,27,64,…}.

﻿an=n3a_n=n^3an​=n3﻿

﻿an=an−1+an−2a_n=a_{n-1}+a_{n-2}an​=an−1​+an−2​﻿

﻿an=(−1)nn2a_n=(-1)^nn^2an​=(−1)nn2﻿

What is the 50th term of the sequence whose first term is 8 and common difference is 0.25?

Identifying the ﻿nnn﻿th term of a sequence: {1,2,3,4,…}.

﻿an=na_n=nan​=n﻿

﻿an=3+(n−1)6a_n=3+(n-1)6an​=3+(n−1)6﻿

﻿an=2n+1a_n=2n+1an​=2n+1﻿

What is the 7th term of the sequence whose first term is 2 and common difference is -3?

What is the 98th term of the sequence whose 20th term is 30 and common difference is 5?

Incorrect

Great!

Identifying the $n$ th term of a sequence: {-1,4,-9,16,…}.

$a_n=2n+3$

$a_n=n-3$

$a_n=(-1)^nn^2$

Identifying the $n$ th term of a sequence: {0,1,1,2,3,…}.

$a_n=2n+3$

$a_n=a_{n-1}+a_{n-2}$

$a_n=(-1)^nn^2$

Given: a₁=-2, a₃₀=-89. What is d?

Identifying the $n$ th term of a sequence: {3,9,15,21,…}.

$a_n=2n+3$

$a_n=3+(n-1)6$

$a_n=2n+1$

Identifying the $n$ th term of a sequence: {1,8,27,64,…}.

$a_n=n^3$

$a_n=a_{n-1}+a_{n-2}$

$a_n=(-1)^nn^2$

Identifying the $n$ th term of a sequence: {1,2,3,4,…}.

$a_n=n$

$a_n=3+(n-1)6$

$a_n=2n+1$