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Bumek [7]
3 years ago
5

9u2v and which term are like terms? A.6u2, B.9uv2, C.15u2v, D.13u2v2

Mathematics
2 answers:
irina1246 [14]3 years ago
8 0
It is essential that you use the symbol " ^ " to denote exponention.  See the following changes I have made.  

9u^2v and which term or terms are like terms?  15u^2v.  Why?   because both have "u^2" in them.
noname [10]3 years ago
7 0

Answer:

C 15u^2 v

Step-by-step explanation:


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Gnom [1K]

Answer:

a) The mean number of radioactive atoms that decay per day is 81.485.

b) 0% probability that on a given day, 50 radioactive atoms decayed.

Step-by-step explanation:

Poisson distribution:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\lambda}*\lambda^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\lambda is the mean in the given interval.

a. Find the mean number of radioactive atoms that decayed in a day.

29,742 atoms decayed during 365 days, which means that:

\lambda = \frac{29742}{365} = 81.485

The mean number of radioactive atoms that decay per day is 81.485.

b. Find the probability that on a given day, 50 radioactive atoms decayed.

This is P(X = 50). So

P(X = 50) = \frac{e^{-81.485}*(81.485)^{50}}{(50)!} = 0

0% probability that on a given day, 50 radioactive atoms decayed.

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