Melody

Through (1/2, -2/7) perpendicular to the line 5x-10y=1

5x-10y=1

5x-1=10y

$$y=\frac{5x}{10}-\frac{1}{10}\\\\
y=\frac{1x}{2}-\frac{1}{10}\\\\$$

gradient is 1/2

Gradient of perpendicular is -2/1=-2

now you just have to solve

$$\dfrac{y-\frac{-2}{7}}{x-\frac{1}{2}}=-2$$

I am in a bit of a hurry so i hope i haven't made any mistakes.

$${\frac{{\mathtt{8}}}{{\mathtt{100}}}}{\mathtt{\,\times\,}}{\mathtt{22\,500}} = {\mathtt{1\,800}}$$

$1800

just do it on your calculator - You can use the web2 calc on the home page if you want to.

1 divided by 4 =

You cannot factor it!

Thank you zegroes.  I am always overwealmed by the support that i get.

Another rude person Kaylaa also took points off Problem after he answered her question correctly.

Problem hasn't got many points and it is not fair that he lost them in this way.  Perhaps some people could help rectify this miscarriage of justice as well.

This is the thread

You have to give us the numbers and the rules and then we can do it for you.

If they sell 100000 tickets and you buy one then your chance of winning is 1 in 100000.

11/6/14

A cute pic!

Thanks Ninja.

A great answer NinjaDevo.  

You took points off me because I took the time to try and help you.

Here I have given you considerable help and still you offer no thanks or gratitude of any kind.

You are one of the rudest people who has ever been on this forum.

Let other people decide how gracious you are!