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Art [367]
2 years ago
9

Solve for x for brainiest

Mathematics
1 answer:
saul85 [17]2 years ago
7 0
Lovee the nails!!!


my guess is x=28

hope this helps!!! :))
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A system contains n atoms, each of which can only have zero or one quanta of energy. How many ways can you arrange r quanta of e
My name is Ann [436]

Answer:

\mathbf{a)} 2\\ \\ \mathbf{b)} 184 \; 756 \\ \\\mathbf{c)}  \dfrac{(2\times 10^{23})!}{(10^{23}!)(10^{23})!}

Step-by-step explanation:

If the system contains n atoms, we can arrange r quanta of energy in

                         \binom{n}{r} = \dfrac{n!}{r!(n-r)!}

ways.

\mathbf{a)}

In this case,

                                n  = 2, r=1.

Therefore,

                    \binom{n}{r} = \binom{2}{1} = \dfrac{2!}{1!(2-1)!} = \frac{2 \cdot 1}{1 \cdot 1} = 2

which means that we can arrange 1 quanta of energy in 2 ways.

\mathbf{b)}

In this case,

                                n  = 20, r=10.

Therefore,

                    \binom{n}{r} = \binom{20}{10} = \dfrac{20!}{10!(20-10)!} = \frac{10! \cdot 11 \cdot 12 \cdot \ldots \cdot 20}{10!10!} = \frac{11 \cdot 12 \cdot \ldots \cdot 20}{10 \cdot 9 \cdot \ldots \cdot 1} = 184 \; 756

which means that we can arrange 10 quanta of energy in 184 756 ways.

\mathbf{c)}

In this case,

                                n = 2 \times 10^{23}, r = 10^{23}.

Therefore, we obtain that the number of ways is

                    \binom{n}{r} = \binom{2\times 10^{23}}{10^{23}} = \dfrac{(2\times 10^{23})!}{(10^{23})!(2\times 10^{23} - 10^{23})!} = \dfrac{(2\times 10^{23})!}{(10^{23}!)(10^{23})!}

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3 years ago
A scientist finds the temperature of a sample at the beginning of an experiment is t degrees celcius. After 1 hour, the temperat
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So the two possible original temperatures would be either -9 or 9.
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Melanie spent $40 in 4 hours while shopping at the mall. How much money has changed hands? A) $10 B) $40 C) -$10 D) -$40
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I actually think its b cause it can't be d (thats obvious) yh........but i might be wrong

4 0
3 years ago
How to add the integers -7 and -5.
Rzqust [24]
-7 + -5
When you add negative, it would be the same as subtracting
Turns into: -7-5
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The solutions is -12
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3 years ago
Need help with number 2 please and thx
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