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3 years ago

Pls help! will give brainlist!

Mathematics

2 answers:

Murljashka [212]3 years ago

5 0

Answer:

The last one

Step-by-step explanation:

If you were to multiply each of the numbers by 10, you would get

9cm, 12cm, 15cm.

If you divide by 3,

3cm, 4cm, 5cm.

That is a 3-4-5 triangle, and that is a pythagoren triple.

Since we mulitplied and divided the same for all 3 numbers, it still works for the original triangle (0.9, 1.2, 1.5)

Vika [28.1K]3 years ago

3 0

The last one because (1,5)^2 = (0,9)^2 + (1,2)^2

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3 years ago

Assume that BK Call Center receives 2 phone calls in one hour on average. If the department works 10 hours a day receiving the c

MrMuchimi

Using the Poisson distribution, the probabilities are given as follows:

A. 0.0888 = 8.88%.

B. 0.1354 = 13.54%.

C. 0.8646 = 86.46%.

<h3>What is the Poisson distribution?</h3>

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

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

The parameters are:

x is the number of successes

e = 2.71828 is the Euler number

$\mu$ is the mean in the given interval.

Item a:

10 hours, 2 calls per hour, hence the mean is given by:

$\mu = 2 \times 10 = 20$ .

The probability is P(X = 20), hence:

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

$P(X = 20) = \frac{e^{-20}20^{20}}{(20)!} = 0.0888$

Item b:

1 hour, hence the mean is given by:

$\mu = 2$

The probability is P(X = 0), hence:

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

$P(X = 0) = \frac{e^{-2}2^{0}}{(0)!} = 0.1354$

Item c:

The probability is:

$P(X \geq 1) = 1 - P(X = 0) = 1 - 0.1354 = 0.8646$

More can be learned about the Poisson distribution at brainly.com/question/13971530

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2 years ago

Can someone help me with this Exponential Growth and Decay word problem? I have been able to get the rest of them done but this

Vinvika [58]

Answer:

A) 61.68

Step-by-step explanation:

This is an exponential decay of 0.875. The way to know that is to get that is $\frac{right}{left} \\$ (Pick a random number and divide by the number to the left of it) From there, there is a 12 hour difference from 7 am to 7pm! Divide 306.25/0.875 and divide it by 0.875 by the answer of that each time 12 times. The exact answer is 61.68402914