This problem is killing me

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October 21st 2009, 10:48 AM
sitefeeder

This problem is killing me

Hi I'm new and need help desperately. I have to admit I am probably not as good in math than most of the people on this site, but I tried my best and just can't figure this problem out.

Can someone please help me out?

1.532 x 0.659 = 0.623
1.542 x 0.631 = 0.623
1.589 x 0.669 = 0.554
1.474 x 0.705 = 0.669

I know each line is simple of course, but the actual problem is X has to match on all 4 lines....

Any help is appreciated. Thanks in advance.
October 21st 2009, 12:32 PM
Djaevel

Im not exactly understanding what your looking for i dont see an X in there except what i would assume is a multiplication sign?
October 21st 2009, 12:49 PM
sitefeeder

Quote:

Originally Posted by Djaevel

Im not exactly understanding what your looking for i dont see an X in there except what i would assume is a multiplication sign?

Yeah sorry multiplication sign is the X I was referring to.
October 21st 2009, 02:45 PM
stapel

I'm sorry, but I don't understand what you're asking...? (Blush)

Please reply with the full and exact text of the exercise and its instructions, including clarification of what "X" is supposed to indicate (is it a "times" sign, a variable, an empty slot to be filled in, or something else?) and what you mean by "X has to match" (match what? how?).

Thank you! (Wink)
October 21st 2009, 04:30 PM
sitefeeder

Quote:

Originally Posted by stapel

I'm sorry, but I don't understand what you're asking...? (Blush)

Please reply with the full and exact text of the exercise and its instructions, including clarification of what "X" is supposed to indicate (is it a "times" sign, a variable, an empty slot to be filled in, or something else?) and what you mean by "X has to match" (match what? how?).

Thank you! (Wink)

X is an empty slot to be filled. When I said X needs to match is that it has to be the same on all 4 lines.

Here is the question:

Please find a formula that will solve all 4:

1.532 _ 0.659 = 0.623
1.542 _ 0.631 = 0.623
1.589 _ 0.669 = 0.554
1.474 _ 0.705 = 0.669

_ would be the blank space where the formula goes. I have no idea where to begin to create the formula.
October 22nd 2009, 04:32 AM
aidan

Quote:

Originally Posted by sitefeeder

X is an empty slot to be filled. When I said X needs to match is that it has to be the same on all 4 lines.

Here is the question:

Please find a formula that will solve all 4:

1.532 _ 0.659 = 0.623
1.542 _ 0.631 = 0.623

1.589 _ 0.669 = 0.554

1.474 _ 0.705 = 0.669

_ would be the blank space where the formula goes. I have no idea where to begin to create the formula.

from the first 2 lines:
The OPERATOR on the constants in line1
give the same results as the OPERATOR in line2 on those constants.

Line4 and Line5 have a constant (0.669) in common.

That is the key to defining what the operator does.

If ADDITION/SUBTRACTION
subtract line2 from line1
$ 1.532 \,\,\square \,\, 0.659 = 0.623 $

$ 1.542 \,\,\square \,\, 0.631 = 0.623 $
results in:
$ -0.010 [ \, \square \, - \, \square \, ] +0.028 = 0 $

This does NOT hold if the OPERATOR is multiplication or division or exponentiation.

.
October 22nd 2009, 05:44 AM
sitefeeder

Thank you very much.
October 22nd 2009, 08:35 AM
sitefeeder

Actually the formula has to be the same on all 4 lines without using the other lines to solve it.

like this

1_2 = 3
2_1 = 3
0_3 = 3
3_0 = 3

The answer to the above example would be + without using the other lines to solve the problem.