Friday

December 19, 2014

December 19, 2014

Posted by **Meghan** on Monday, August 1, 2011 at 7:28pm.

Do I do this:

a1 + (n-1)d

SO...

5+(101-1)4

5+(100)4

105x4

420

Did I do this problem correctly?

- Math -
**MathMate**, Tuesday, August 2, 2011 at 9:08amAlmost!

First, check your formula against values:

a1+(n-1)d

where a1=5, d=4, and n=term number

For the first term, n=1

5+(1-1)*4=5 correct

For the third term:

5+(3-1)*4=5+2*4=13 correct.

So there is a good chance the formula.

Now do the calculations for the 101th term:

5+(101-1)*4

=5+100*4

Remembering that in all calculations, the priority of operations is in the order:

()

* or ÷

+ or -

So we need to multiply before add, or

5+100*4

=5 + (100*4)

=5 + 400

= 405

**Answer this Question**

**Related Questions**

MATH - In an arithmetic sequence, the first term is 100 and the sixth term is 85...

Math - 1. Find the 12th term of the arithmetic sequence 2, 6, 10, … . 2. Solve ...

Math - A sequence is formed by adding together the corresponding terms of a ...

math - find the rule for the Nth term of the arithmetic sequence. 11/2, 25/6, 17...

Math - Alpha writes the infinite arithmetic sequence 10, 8, 6, 4, 2, 0... Beta ...

Math - 1. Find the common ratio and 9th term of the sequence 6, -3, 3/2, -3/4...

MATH - 2, -4, 8,... The first term of the sequence above is 2, and every term ...

Math ( Can You check my Work?) - 1.an = 3n - 1 2. an = 2(2n - 3) 3.an = 4^n 4.an...

Math - 3,5,-5... The first term in the sequence of #'s shown above is 3. Each ...

Mathematics : Arithmetic Sequence - The 5th term and the 8th term of an ...