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Q: Is there any way to prove 7 X 13 equals 28 using 7X7X7... 28?

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It isn't equal, and any proof that they are equal is flawed.

A theory.

Well, 4 ain't equal to 5, and any "proof" to the contrary is faulty.

x-y=4

When c = the number that is the dimension of the cube (ex. this time, 7), you can find the number of cubes for any size of cube. c3 - (c - 2)3 So for 7, that is 7x7x7 - (5x5x5) 49x7 - 25x5 343 - 125 218 There are 218 cubies in a 7x7x7 Rubik's cube!

A - B is null.=> there are no elements in A - B.=> there are no elements such that they are in A but not in B.=> any element in A is in B.=> A is a subset of B.

If x is a null matrix then Ax = Bx for any matrices A and B including when A not equal to B. So the proposition in the question is false and therefore cannot be proven.

A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.A sum can be entered in any cell on a spreadsheet or by typing it into the formula bar. You can use calculations in lots of ways to do a sum, including the SUM function, the SUBTOTAL function, using Alt and the equals sign and using the Autosum button.

Ohm's Law: Voltage equals Resistance times Current Given any two, you can figure out the other using simple algebra.

With any regular polygon it is 180 minus interior angle times number of sides equals 360 degrees

prove any two adjacent triangles as congruent

Watch closely . . . (7)2 = 49

No you would have to prove the lineage to prove he is a purebreed.

The 4 interior angles of any 4 sided quadrilateral add up to 360 degrees and using a protractor will prove it.

I--2a+b=2c+2d II--2a+b=c+2d III--a+2b=3d * Here if we perform (I)-(II), we get, c=0 * Using the c we can prove b=0 using (I)-(III). * Now replace 'b' & 'c' as 0 in (I), then we get a=d. Email me at yash2008gates@gmail.com for any queries. I will be very thankful to receive your queries.

y=5x+2 if y equals -4

In normal math, 1 is not equal to 0, so any "proof" that they are equal either uses non-standard definitions, or it is based on faulty logic.

you can prove it by showing people there is no more of that species/animal any more .Then it will prove that it is truely extinct and all gone

No. Any person trained in logic will tell you that 'you cannot prove a negative'. If you want to disprove the existence of fairies you first attempt to try and prove their existence. And the best you can do is to fail to prove it. The option to prove it always exists.

only if he can prove that he is indeed prove that he is 99.9% the father

Any number minus itself equals zero. Any number plus its opposite equals zero. Any number times zero equals zero.

Macbeth.

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No, not that a palaeontologist could prove it.

Prove