Beau Peep Notice Board

Beau Peep Notice Board => Just a Fort => Topic started by: Mince on July 19, 2010, 09:13:17 AM

Title: Maths Question for Bilthehut and any other loser
Post by: Mince on July 19, 2010, 09:13:17 AM
I am thinking of a number. If I subtract five from this number and then multiply the result by itself, I get 9. What is the number I am thinking of?

There are two answers to this question.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Tarquin Thunderthighs lll on July 19, 2010, 09:54:23 AM
One answer is 8, and I get to be a loser.

The other answer is "**** off - I'm no loser!"
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Mince on July 19, 2010, 10:02:56 AM
Yes, one answer is 8. Tell me the other answer and I'll officially and without reservation announce to the whole forum that you are less of a loser.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Bilthehut on July 19, 2010, 01:31:44 PM
Boring.  -2.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Tarquin Thunderthighs lll on July 19, 2010, 01:56:48 PM
Wrong!  ..0
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Mince on July 19, 2010, 02:20:18 PM
Tarquin's right. You're wrong, Bilthehut.

Go on then, Tarquin. Tell us the other one. No one else has a hope in hell.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Tarquin Thunderthighs lll on July 19, 2010, 02:56:38 PM
Ah, but I don't think you know either. Tell us what you think it is, and tell you if you're right.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Bilthehut on July 19, 2010, 02:58:48 PM
Quote from: Bilthehut on July 19, 2010, 01:31:44 PM
Boring.  -2.

Whoops!   Too much negativity in the air.  The answer should have been 2.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Tarquin Thunderthighs lll on July 19, 2010, 04:48:41 PM
Oh, great - now we'll never know if Mincey knew the answer.  >:(
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Mince on July 19, 2010, 06:43:10 PM
I'd like to see Bilthehut show how to get both answers using algebra.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Tom on July 19, 2010, 08:01:17 PM
Quote from: Mince on July 19, 2010, 09:13:17 AM
I am thinking of a number. If I subtract five from this number and then multiply the result by itself, I get 9. What is the number I am thinking of?
There are two answers to this question.

Should that be I am thinking of two numbers, then?
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Tarquin Thunderthighs lll on July 19, 2010, 08:03:58 PM
Quote from: Mince on July 19, 2010, 06:43:10 PM
I'd like to see Bilthehut show how to get both answers using algebra.

I doubt if he even wears one.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Bilthehut on July 19, 2010, 11:34:25 PM
Is it a green one?
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Bilthehut on July 19, 2010, 11:53:41 PM
The question can be shown as:
Quote from: Mince on July 19, 2010, 09:13:17 AM
I am thinking of a number "x". If I subtract five from this number "x-5" and then multiply the result by itself "(x-5) times (x-5) is (x-5)2", I get 9 "(x-5)2=9". What is the number I am thinking of?

There are two answers to this question.
This is therefore (x-5)2=9
then (x-5)(x-5)=9
Multiplying this, we get x2 - 5x - 5x + 25 = 9
Simplifying, this becomes x2 - 10x + 16 = 0
Which then is (x-2)(x-8)=0
Meaning x is either +2 or +8

So there, Mincy-poo  :P
 
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Mince on July 19, 2010, 11:59:09 PM
I love how you multiply it out and then factorise it again.

Here is the easy way.

(x - 5)² = 9

Square root both sides.

x - 5 = 3 or -3

Add 5 to both sides.

x = 8 or 2
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Bilthehut on July 20, 2010, 12:02:06 AM
Tomahto, tomato.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Mince on July 20, 2010, 12:03:39 AM
Stupid, slow way; intelligent, quicker way.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Bilthehut on July 20, 2010, 12:25:17 AM
Matter of opinion.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Tarquin Thunderthighs lll on July 20, 2010, 12:29:26 AM
Quote from: Mince on July 19, 2010, 11:59:09 PM
I love how you multiply it out and then factorise it again.

Here is the easy way.

(x - 5)² = 9

Square root both sides.

x - 5 = 3 or -3

Add 5 to both sides.

x = 8 or 2

Darn - beat me to it.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Mince on July 20, 2010, 12:35:25 AM
Quote from: Tarquin Thunderthighs lll on July 20, 2010, 12:29:26 AM
Darn - beat me to it.

Ooh, how you can stand there and ....
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Tarquin Thunderthighs lll on July 20, 2010, 01:08:02 AM
I'm sitting.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: The Peepmaster on July 21, 2010, 03:50:35 PM
I now see why the plankton-muncher so worships us cartoonists. I've never seen so much boring twaddle in all my days. Lighten up, Mince!
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Fyodor on July 21, 2010, 06:36:12 PM
Why all the algebra? I did it in my nut in about 30 seconds by working backwards.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Bilthehut on July 23, 2010, 10:14:30 AM
There are 2 trees in a garden (tree "A" and "B") and on the both trees are some birds.

The birds of tree A say to the birds of tree B that if one of you comes to our tree, then our population will be the double of yours.

Then the birds of tree B tell to the birds of tree A that if one of you comes here, then our population will be equal to that of yours.

Now answer: How many birds in each tree?
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Jack on July 23, 2010, 04:24:35 PM
7 in tree A
5 in tree B
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Tarquin Thunderthighs lll on July 23, 2010, 06:11:16 PM
Ah, but what kind of birds are they?
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Jack on July 23, 2010, 06:19:31 PM
As they apparently have the power of speech, I'm assuming they're some kind of parrot.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Tarquin Thunderthighs lll on July 23, 2010, 06:20:27 PM
Not tits then?
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Jack on July 23, 2010, 06:32:49 PM
No comment.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: Bilthehut on August 04, 2010, 12:26:40 PM
Quote from: Jack on July 23, 2010, 04:24:35 PM
7 in tree A
5 in tree B

Oops, sorry Jack.  Forgot to congratulate you for correctly answering the question.

Congratulations.
Title: Re: Maths Question for Bilthehut and any other loser
Post by: The Peepmaster on August 04, 2010, 08:02:40 PM
Were the birds chufflinks?