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katrin [286]
3 years ago
13

74y−8−78y=−4y−8 how many solutions

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
4 0

Answer:

there is an  infinet amount of answers.

Step-by-step explanation:

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There are 16 people. Each person is broken down into the colors they prefer, the shades they prefer, and the tertiary gradients
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Answer:

There are 69120 total combinations.

Step-by-step explanation:

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EleoNora [17]
1.
Consider a group of n objects. Assume we want to form groups of r, from these n objects.

There are in total C(n, r)= \frac{n!}{r!(n-r)!} many ways of doing so.

where, r! is "r factorial", calculated as 1*2*3*...*(r-1)*r

2.

C(x, 2) is the total number of pairs out of x objects, that we can form.

so let the x objects represent the x teams, and 2, represent a group of 2, which means a game.

The total number of games is:

n(x)=2*C(x, 2) = 2*  \frac{x!}{2!(x-2)!}= \frac{x!}{(x-2)!}= \frac{x(x-1)(x-2)!}{(x-2)!}=x(x-1)= x^{2} -x

Remark, we multiplied by 2, since there will be 2 matches for each pair of teams.


Answer: x^{2} -x

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