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kodGreya [7K]
3 years ago
9

How many ways can three items be selected from a group of six items? use the letters a, b, c, d, e, and f to identify the items,

and list each of the different combinations of three items?
Mathematics
1 answer:
vovangra [49]3 years ago
7 0

abc,bca,cba,cab,bac ? then just rotate the others like I did

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Both rooms share a common side whose dimension is unknown. Call it x.

Then, the area of both squares have x as common factor.

So, x is the greatest common factor of 104 and 130.

You should know how to calculate the greatest common factor of two integers.

Just find the prime factors and choose the common factors raised to the lowest exponent.

104 = (2^3) (13)

130 = (2) (5)(13)

=> the greatest common factor is 2 * 13 = 26, and that is the greatest possible integer length of the shared wall.

Answer: 26



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\bf 4(x+5)^3(x-1)^2-(x+5)^4\cdot 2(x-1)
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\\\\\\ \underline{2}\cdot 2\underline{(x+5)^3}(x-1)\underline{(x-1)}~-~\underline{2}\underline{(x-1)}(x+5)\underline{(x+5)^3}\leftarrow 
\begin{array}{llll}
notice~the\\
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