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Author Topic: Algebra Homework  (Read 4720 times)

Offline Understudy

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Re: Algebra Homework
« Reply #20 on: October 02, 2008, 03:48:20 PM »
Ive been working on that one -how did you come by those figures- :lol: RDY-B

It seemed to me to be the only suitable pattern left over. But I couldn't create a proof to confirm it. So it's not certain.

None of the lines are consecutive 1,2,3,4, ....
It is not grouped as odds and evens
None of them appear to have a + - x / sequence or similar total.
They didn't fit as Fibonacci numbers
The clue meant that 5 was in the sequence.
However 5 cannot be the last digit, unless you 1,2,3,4,5 which is a direct sequence. Eliminated in step one.
The line below contains 1,2,4, Since the pattern show no duplicates in a three digit combo going down. I went with what would be next. 1,3,4
The next number would have to be 5 to complete the clue.
4,5,6 was also in the line below so 7 seemed appropriate.
1,3,4,5,7

It's not a proof. It's a bad guess. But I figured what the heck.

Sincerely,
Brendhan
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Offline Keith13

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Re: Algebra Homework
« Reply #21 on: October 02, 2008, 04:55:18 PM »
There is to many things that Algebra teaches a few problems would not be able to teach you everything.

Maybe a  few thousand.
You could probly try searching on google for problems though.

try purplemath on the internet

http://www.purplemath.com/

got me thru college algebra

Keith

Offline rdy-b

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Re: Algebra Homework
« Reply #22 on: October 03, 2008, 02:59:38 AM »
3-6
1-3-4-5-7
1-3-4-6-7
2-3-4-6
_  _  _  _  _  <1-2-4-5-7
1-2-4-5-6-7
1-3-6
and i will cary it further
2-5-7
2-5     
keeping in acceding order -now we have 5 of each number 1 thru 7
you will notice it took 35 spaces to accomplish this -and you can take note that 5x7=35
thats my roll and i am sticking to it   :lol:  8-) RDY-B
 
                                                                                               




Offline SgtMaj

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Re: Algebra Homework
« Reply #23 on: October 03, 2008, 06:25:07 AM »
I said my last post would be my last post, but I can't bear to see you suffering with this.  Neither one of you are correct, but both of you are SO close.

The correct answer is 1 & 2 & 4 & 6 & 7

Each number represents a bar on an LCD display, and each line represents the bars that have to be lit up to create the numbers 1-9.  So the top horizontal bar is represented by 1, the middle horizontal bar is 4, and the bottom horizontal bar is 7... then the top left vertical bar is 2, the top right vertical bar is 3, the bottom left vertical bar is 5 and the bottom right vertical bar is 6.  Five was the clue because 5 is also the number that we're trying to light up on the LCD display.  To light it up, we need the top horizontal bar (1), the top left bar (2), the middle bar (4), the bottom right bar (6) and the bottom bar (7).

There is a mathematical way to arrive at the same sequence, but this is far easier to explain.  So... there you have it.

Offline reinbeau

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Re: Algebra Homework
« Reply #24 on: October 03, 2008, 08:17:31 AM »
You guys are making my head hurt  :-P

Algebra has always been my downfall.  Geometry, good, algebra, bad!

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Offline Understudy

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Re: Algebra Homework
« Reply #25 on: October 03, 2008, 08:28:37 AM »
I said my last post would be my last post, but I can't bear to see you suffering with this.  Neither one of you are correct, but both of you are SO close.

The correct answer is 1 & 2 & 4 & 6 & 7

Each number represents a bar on an LCD display, and each line represents the bars that have to be lit up to create the numbers 1-9.  So the top horizontal bar is represented by 1, the middle horizontal bar is 4, and the bottom horizontal bar is 7... then the top left vertical bar is 2, the top right vertical bar is 3, the bottom left vertical bar is 5 and the bottom right vertical bar is 6.  Five was the clue because 5 is also the number that we're trying to light up on the LCD display.  To light it up, we need the top horizontal bar (1), the top left bar (2), the middle bar (4), the bottom right bar (6) and the bottom bar (7).
There is a mathematical way to arrive at the same sequence, but this is far easier to explain.  So... there you have it.


 -a-
|   |
f   b
|   |
 -g-
|   |
e   c
|   |
 -d-

A node problem, I should shake my head in shame for not recognizing that one. It is in basic electronics on dealing with seven segment displays.

The formula used is knows as Karnaugh map. However it is not a simple formula. Boolean expressions can be a pain. But they sure can be useful.

Sincerely,
Brendhan

PS. I also just realized another thing. You are off on your identification. It should have been.
2,3           =1
1,2,4,5,7   =2
1,2,3,4,7   =3
2,3,6,7      =4
1,3,4,6,7   =5

The formula would have worked for the way you set it up but but electronics on seven segments displays set up 1(a) as the top bar. 7(g) is the middle bar
The status is not quo. The world is a mess and I just need to rule it. Dr. Horrible

Offline JP

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Re: Algebra Homework
« Reply #26 on: October 03, 2008, 08:32:56 AM »
I said my last post would be my last post, but I can't bear to see you suffering with this.  Neither one of you are correct, but both of you are SO close.

The correct answer is 1 & 2 & 4 & 6 & 7

Each number represents a bar on an LCD display, and each line represents the bars that have to be lit up to create the numbers 1-9.  So the top horizontal bar is represented by 1, the middle horizontal bar is 4, and the bottom horizontal bar is 7... then the top left vertical bar is 2, the top right vertical bar is 3, the bottom left vertical bar is 5 and the bottom right vertical bar is 6.  Five was the clue because 5 is also the number that we're trying to light up on the LCD display.  To light it up, we need the top horizontal bar (1), the top left bar (2), the middle bar (4), the bottom right bar (6) and the bottom bar (7).
There is a mathematical way to arrive at the same sequence, but this is far easier to explain.  So... there you have it.


 -a-
|   |
f   b
|   |
 -g-
|   |
e   c
|   |
 -d-

A node problem, I should shake my head in shame for not recognizing that one. It is in basic electronics on dealing with seven segment displays.

The formula used is knows as Karnaugh map. However it is not a simple formula. Boolean expressions can be a pain. But they sure can be useful.

Sincerely,
Brendhan


       

That is just nerdilicious!


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Offline pdmattox

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Re: Algebra Homework
« Reply #27 on: October 03, 2008, 10:10:17 AM »
My head does hurt after reading all this. I never did well with that stuff either. Hey JP is that even a word? Got a chuckle and a smile out that.  :-D 

Offline KONASDAD

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Re: Algebra Homework
« Reply #28 on: October 03, 2008, 11:47:46 AM »
I might just have to buy a gun so I can shoot the computer screen after this thread.
"The more complex the Mind, the Greater the need for the simplicity of Play".

Offline rdy-b

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Re: Algebra Homework
« Reply #29 on: October 03, 2008, 02:41:18 PM »
Electronics  :? think i will sick to bees dont need to count past ten - 8-) RDY-B

Offline reinbeau

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Re: Algebra Homework
« Reply #30 on: October 03, 2008, 03:56:03 PM »
I might just have to buy a gun so I can shoot the computer screen after this thread.


You can use one of mine!

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anything