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There are 3 numbers after  the point so there must be 3 zeros on the bottom of the fraction.

$$0.125=\frac{125}{1000}$$

Hi Edison,

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Melody.

I teach why

first look at this graph:

100% ------ 9677

13.6%------- ?

second 

9677 divide by 100 is 96.77 so we can find the diffence and don't use minus.

third 

13.6 x 96.77 equals 1316.072

well, the only prime factors of 33 x 5 are 3,5,11

none of these is a factor of 32 or 52 so the Highest Common Factor is 1

Unfortunately, no!

Choose values of angle θ to go from 0 to 360° and then use x = r*cos(θ) and y = r*sin(θ) where r is the radius of your circle. That's assuming the centre of your circle is at (0,0). If the circle is centred at (xc, yc) you will need to add xc to the x values and yc to the y values.

Ask a Random child,if he say this way, say “ are you sure "

“promise ok?”

if you lie,your nose will be long!”

“I'm telling the truth,when you lie your nose will be long"

He might sound scare and that me he is telling the lie!

I got easy way! Go and get a GPS!

There are an infinite number of real solutions to this (to say nothing of the complex solutions) as can be seen from the graph below.  If you are looking for real solutions in the range 0 to 2pi (i.e. 0 to 360°)  the graph should help.

I'll take your word for it MacGamer04 

Tim has $1.50.......

P and NP refer to types of solutions to numerical algorithms.  If an algorithm can be solved in "polynomial time" it is referred to as P, if not, it is "non-polynomial time", or NP.  Do an internet search for more detail!

The two are not the same. 

I think that you should talk to your school councillor.

Ermm!  The equation says the angle whose tangent is x is 7/11.

so x = tan(7/11)   (presumably the angle is in radians.)

Or did the questioner mean tan(x) = 7/11, in which case Chris's answer is correct. 

Hi BrainChap21,

Welcome to Web2.0calc forum.  We hope you like it here.

Thank you for answering too.  We want everyone to join in.  

Hi Bertie,

Thanks for checking BrainChap's answer (and for advertising this fact).  I don't always check answers but I know that they should be checked and this makes my role much easier to execute well. You could also have given BrainChap a thumbs up.  He would have liked that! 

Oh! thanks for the humour too 

If (x-1)(x-4)>0, why is x

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Have a look at the graph of this.....

Note, that we have three intervals of interest in this quadratic inequality.....

Namely, everything < 1, everything between 1 and 4, and everything > 4.

Note that all values between 1 and 4, inclusive, make this inequality untrue. For example, if x = 2, we have

(2-1)(2-4) = (1)(-2) = -2, and that's not greater than 0. Note that 1 and 4 don't work, either. They make the equality = 0, but it has to be >0.

So, the solutions to this inequality are .....x < 1    and x > 4

Hi alanb1291,

Welcome to Web2.0calc forum.  we hope you like it here.

Thanks for that answer.  i just want  to clarify a couple of things.

 "Log10 of 100 is 2".  

This is worded log of 100 base 10 is 2   It is written   $$log_{10}100=2$$

This is true because $$10^2=100$$

----------------------------------------------------------------------------
I have writen this in Latex - using the latex tab in the ribbon above 

$$log_{10}100=2$$    is written in as log_{2}100=2

and

$$10^2=100$$    is written in as 10^2=100

Why don't you have a play with it!

You can also get subscripts and superscripts to display via the drop down format keys in the top line.

does that make sense?

I wrote some excellent notes for this but the thread will not display in the new forum. Drats!!!!

Anyway, here is a site that might help.

http://www.mathsisfun.com/algebra/negative-exponents.html

The lenght of a rectangle is twice its breadth and the perimeter is 6/7 m what is the area of the rectangle?

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OK, so the perimeter is given by 2(W + L), but L = 2W, so this simplifies to 2(W + 2W) = 2(3W) = 6W

So we have...

(6/7) m = 6W     dividing everything by 6, we have

W = (1/7) m      and L is twice this = (2/7)m

And the area = L X W   =   (1/7)m X (2/7)m  =  (2/49) m²

Hi matisonc,

Welcome to web2.0calc forum!  We hope you like it here.

I looked up your word on the web and it does not seem to exist.  Sorry.

Thanks for answering though.  We like people to join in.

You will get a mention in my 'End of Day Wrap' tonight (Sydney time).  Why don't you take a look?

I expect that 'enneadeca' means 19 because 'gon' means sides.

'poly' means many.

Hi jmanf729,

Welcome to the forum!

I think it was the 10,000 th question!

It would be different for different prisms.

If it was a long skinny prism: surface area:Volume would be very big

If it was short and fat like a cube, the ratio would be smaller.

$$\frac{47}{10}$$   is an improper fraction 

or

$$4\frac{7}{10}$$  is a mixed numeral.

I'll second that.

It IS great to have you on the forum.