any one really good at algebra 1?

Question

i dont know how to do a fraction heres an example one half is a 1 with a 2 under it right? well is i had a 1 with a 2 under it and an N^3 next to it what does that mean and what do i do?

Answer 1

Well, N is what is called a "Variable", which means its value can "vary!".

N^3 means NxNxN. So, for example, if you were told that, say, N had the value of 4. Then, N^3 would be the same as 4^3, which is 4x4x4=64.

now, your initial question was (1/2) N^3. This means, take the value of N^3 and multiply it by (1/2). When a number (even a fraction) is written directly next to a variable, then multiplication is the implied operation.

So, as in the previous example, if N=4, then
(1/2)N^3
= (1/2) x 4^3
= (1/2) x 4 x 4 x 4
= (1/2) x 64
=32

Now, this answer would only be correct if N=4. I would assume that somewhere you have been given some value of the variable N. Otherwise, there is not much you could do with (1/2) N^3 just on its own.

Good luck with your fractions and algebra!

Answer 2

The way you described this fraction is not very clear. It could be one of these two:

1/(2n^3) or (1/2)(n^3)

= 1/(2*n*n*n) or = (1/2)(n*n*n)

What exactly do you need to do with the fraction?

Answer 3

it sounds like 1/2 times N^3 or (1/2)N^3. Remember, N^3 simply means NxNxN. or N multiplied times itself 3 times.

Another example M^5=MxMxMxMxM

Answer 4

it says to multiply n^3 by one half.

1/2 (n^3)
(hopefully you know that n^3 means n*n*n)

you can rewrite it as n^3 over 2:

n^3/2

unless you have been given a value for 'n', you've completed the problem.

keep asking questions when you are confused! I like to help people who are sincerely trying!

Answer 5

it's one half times n to the 3rd power