NEED MATH HELP!!! ill give medals and become fan!!!!

Question

smilie2015 · Answer

your question?

ms-brains · Answer

What is the question dear? @Abbs__

anonymous · Answer

Find an equation for the nth term of the arithmetic sequence.

-1, 2, 5, 8, ...

directrix · Answer

This looks like an arithmetic sequence.

3 is added to each term to get the next term. 

Do you agree with that?

anonymous · Answer

yes

directrix · Answer

Let's see if this works:

Given an arithmetic sequence with the first term a1 and the common difference d, the nth (or general) term is given by an= a1 + (n – 1)d. 

a1 = -1

d = 3

directrix · Answer

an= a1 + (n – 1)d

an = -1 + d * (n - 1)

an = -1 + 3 * ( n- 1)

@Abbs__

Would you distribute the 3 over (n - 1) and add -1 to simply this?

directrix · Answer

In other words, simplify this:  -1 + 3 * ( n- 1)

That will be the formula for the nth term of the sequence

anonymous · Answer

oh wow you made it so easy ! :)

anonymous · Answer

Can you help me with some more?

directrix · Answer

What did you get for the answer to the question? I'll check with what I got.

anonymous · Answer

all ihad to do was find an equation

anonymous · Answer

Find the first six terms of the sequence.

a1 = -4, an = an-1 + 7

anonymous · Answer

but can you help with that one

directrix · Answer

What did you get for this when you simplified:

 -1 + 3 * ( n- 1) = what?

anonymous · Answer

an=-1+3(n-1)

directrix · Answer

You can do a little more simplifying with this:

-1+3(n-1)

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