Any Math Whizzes out there???

**Kwilson408** · 11-30-2003, 07:06 PM

[QUOTE]Originally posted by Kwilson408
[B]Having a little trouble with this one. Any help would be greatly appreciated.

If 15 times the reciprocal of a number is A=added to the ratio of 9 times a number minus 7 and the number is plus 2, the result is 9. What is the number?

:clip:

Is this word problem even written correctly?

**buddyjuf** · 11-30-2003, 07:14 PM

[QUOTE]Originally posted by Kwilson408
[B]

Originally posted by Kwilson408
Having a little trouble with this one. Any help would be greatly appreciated.

If 15 times the reciprocal of a number is A=added to the ratio of 9 times a number minus 7 and the number is plus 2, the result is 9. What is the number?

:clip:

Is this word problem even written correctly?

whats what Im thinking!
plz be more clear

**Kwilson408** · 11-30-2003, 07:19 PM

Originally posted by bdjuf

whats what Im thinking!
plz be more clear

I wish I cold be more clear. However, This college instructor unfortunately needs a "plexotomy."

Plexotomy: Surgical proceedure where a doctor cuts a square out of your abdomen and places a piece of plexiglas over the hole so that you can see where your going when you have your head up your ass.

Can you maybe try and decipher what she is trying to say???

Thanks,

--Ken Dog

**buddyjuf** · 11-30-2003, 07:31 PM

bro your math teacher is a joke

**mryellow** · 11-30-2003, 07:39 PM

If 15 times the reciprocal of a number is A=added to the ratio of 9 times a number minus 7 and the number is plus 2, the result is 9. What is the number?

15/A + (9A - 7)/(A+2) = 9

Think that's it if I read right.

Not a whiz tho, just a programmer.

-Ben

**buddyjuf** · 11-30-2003, 07:40 PM

Originally posted by mryellow

15/A + (9A - 7)/(A+2) = 9

Think that's it if I read right.

Not a whiz tho, just a programmer.

-Ben

15/A is inverse of the number
reciprocal is A(-1) I believe

**Lane** · 11-30-2003, 07:43 PM

wtf is a reciprocal of a number?

i took lots of math in college, never heard of the term

**jennym** · 11-30-2003, 07:55 PM

The recip of a number means when they are multiplied, the answer is 1.

Ex. 3 x 1/3 =1

Those numbers are recips

**MetaformX** · 11-30-2003, 07:56 PM

go with the sum of zero. thats the answer to almost everything

**Lane** · 11-30-2003, 07:57 PM

Originally posted by jennym
The recip of a number means when they are multiplied, the answer is 1.

Ex. 3 x 1/3 =1

Those numbers are recips

last i heard, that was called the "inverse"

**buddyjuf** · 11-30-2003, 08:15 PM

Originally posted by Lane

last i heard, that was called the "inverse"

exactly

X hahahaha> 1/X is inverse
X hahahaha> -X is opposite
X hahahaha> X(-1) is reciprocal

**mijoon** · 11-30-2003, 08:26 PM

Originally posted by Lane
wtf is a reciprocal of a number?

i took lots of math in college, never heard of the term

You're only considering scalars. When dealing with,say tensors , the difference becomes more important .

**jennym** · 12-01-2003, 04:09 AM

Originally posted by bdjuf

exactly

X hahahaha> 1/X is inverse
X hahahaha> -X is opposite
X hahahaha> X(-1) is reciprocal

I think you have it bacwards
http://www.mathsteacher.com.au/year9...ocal/recip.htm

**who** · 12-01-2003, 04:12 AM

12.

Any Math Whizzes out there???

Any Math Whizzes out there???

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