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Aleksandr-060686 [28]
3 years ago
10

I need help with number 22 plz!

Mathematics
1 answer:
tia_tia [17]3 years ago
5 0
I can't see 22 sorry
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variable and fixed costs

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Sarah's heart beats 2,760 times during 20
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When Sarah is resting her heart rate is much lower.

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A club has 20 members, 12 boys and 8 girls. The club needs to select a president, vice-president and secretary. They decide to s
sergejj [24]

Answer:

a)2/5

b)3/5

C) 1

Step-by-step explanation:

a-8/20=2/5

b-12/20-3/5

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3 years ago
The arrival of customers at a service desk follows a Poisson distribution. If they arrive at a rate of two every five minutes, w
vampirchik [111]

Answer:

13.53% probability that no customers arrive in a five-minute period

Step-by-step explanation:

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^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given time interval.

They arrive at a rate of two every five minutes

This means that \mu = 2

What is the probability that no customers arrive in a five-minute period?

This is P(X = 0).

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

P(X = 0) = \frac{e^{-2}*2^{0}}{(0)!} = 0.1353

13.53% probability that no customers arrive in a five-minute period

5 0
3 years ago
In a square, 2 sides have measure of 3x+2 and 5x - 14<br> What is the value of x
yanalaym [24]

9514 1404 393

Answer:

  x = 8

Step-by-step explanation:

In a square, two sides have equal measures:

  3x +2 = 5x -14

  16 = 2x . . . . . . . . add 14-3x to both sides

  8 = x . . . . . . . . . divide by 2

_____

The side lengths are 3(8) +2 = 26 = 5(8) -14.

3 0
3 years ago
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