Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2011-07-25 22:14:38

Registered: 2011-07-19
Posts: 20


seventy years young student of maths is fun
In need of lots of help!
lets start with:
algebra - working with exponents and logarithms-
question five
solve (for x)
answer D x = 9square root(3)
i presume the 2 means that x is squared in the question?
please explain what 9square root of (3) is and how it is the square root of 243?
thank you ....


#2 2011-07-25 22:29:13

From: Bumpkinland
Registered: 2009-04-12
Posts: 104,287

Re: Help!

Hi diamond777;

seventy years young student of maths is fun
In need of lots of help!

Divide both sides by 2

3^x both sides.

Welcome to the forum, young man.

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.


#3 2011-07-25 22:40:34

Registered: 2005-06-28
Posts: 20,915

Re: Help!

Hi diamond777,

Welcome to the forum!

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi. 

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.


Board footer

Powered by FluxBB