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STatiana [176]
3 years ago
7

A jacket usually sells for $66.00. If the jacket is 30% off, and sales tax is 8%, what is the total price of the jacket, includi

ng tax? PLEASE HELP ME A.49.90 B. 50.15 C. 71.41 D. 71.28
Mathematics
1 answer:
RideAnS [48]3 years ago
7 0

Answer:

$50.54

Step-by-step explanation:

$66.00 x .30 = $46.80 x .08 = 3.74 + 46.80 = $50.54

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When studying radioactive material, a nuclear engineer found that over 365 days,
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.

5 0
2 years ago
How do i do this help
Ratling [72]
I don't know if u can see it, but there.
X=12
Y=15
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5 0
3 years ago
Question 4 (1 point)
serious [3.7K]

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Consignment Sale. Just Between Friends is the leading pop-up consignment sales event franchise in North America. The Des Moines
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Answer:

Just Between Friends

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Mean of consignor check, μ = $480

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