All Answers 358115 Answers

$$\frac{64b*3}{4}=16b*3=3*16b$$

and you can finish it!

Look at this post. 

You are confusing me with the deltas    Is this what you want?

$$\lim\limits_{\Delta x\rightarrow0} \frac{\Delta x^2-2\Delta x}{\Delta x}\\\\
=\lim\limits_{\Delta x\rightarrow0} \frac{\Delta x(\Delta x-2)}{\Delta x}\\\\
=\lim\limits_{\Delta x\rightarrow0} \frac{(\Delta x-2)}{1}\\\\
=\lim\limits_{\Delta x\rightarrow0} \Delta x-2\\\\
=0-2\\\\
=-2$$

That categorizes me pretty convincingly - I see John Lennon    

That emu is my new desktop background - thanks Rosala. 

Thank you anonymous,

Why don't you join up and answer other questions?  

The regular answerers have a fun little community and it is very easy to join up.     

Chris has assumed that this is a co-ordinate geometry question.

I did not assume this,  I would have just graphed y>3 on a number line and labelled the number line y.

Most likely Chris provided the desired answer.

It is important that askers word their questions as clearly as possible.

Usually that means use brackets but other things need to be clear too.   

Probably temporary I want to get back to if possible.     30/8/14

Physics:

Thanks Rosala.  

Dragon, It is -11/3  !

If you get confused converting these to decimals you a can always change percentages into fractions.

% means "out of 100"   so 6%=6/100,     17.3%=17.3/100    etc

4%of 40000 = 4/100*40000

4*x+4*3   etc

$$\\\sqrt7((49*x^8)*y^7)\\\\
=\sqrt7*49*x^{15}\\\\$$

or

$$7^{5/2}*x^{15}\\\\
=7^{5/2}*x^{30/2}\\\\
=\sqrt{7^5x^{30}}$$

It worries about becoming unhinged!

Help please!

25.04*3.005

the first one has 2 dp the second has 3 decimal places so the answer will have 5 decimal places

Now multiply ignoring the decimal places.

If you do not know how to do this look here

These are the equations of 3 lines in 3 dimensions.

Alan and Aziz have discovered that there is no point that all 3 of these lines go through.

The lines are not "concurrent".

I didn'r know that.  Thanks Aziz  

Melody dont get angry on me!i was just trying it with an example!

oh thank you so much Aziz!thats very sweet of you!

$$\begin{array}{rlll}
3439.96&=&3104.31(1+r/4)^{20}\\\\
3439.96/3104.31&=&(1+r/4)^{20}\\\\
(3439.96/3104.31)^{1/20}&=&1+r/4\\\\
(3439.96/3104.31)^{1/20}-1&=&r/4\\\\
4[(3439.96/3104.31)^{1/20}-1]&=&r\\\\
\end{array}$$

You can finish it on the site calc on the home page.   

Use the site calc on the home page.

5/6*66.6=

$$x^{50}=10\\\\
(x^{50})^{1/50}=10^{1/50}\\\\
x=10^{1/50}\\\\$$

You can enter this into the site calculator as   10^(1/50)

It sounds like a typo to me, just a little error. I don't think that it would mean anything but would you like to give us an example of one such comma? 

Yes, what did you want us to do with it?  There is no equal sign or anything.  

$$1:1.9\;\rightarrow 10:19$$