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Nesterboy [21]
3 years ago
5

Please answer i will give you brainiest please answer asap!!!!!!!!!!

Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
6 0

Answer:

 1. (y-18 >x-13)

2 . x-18>y-13

Step-by-step explanation:

jekas [21]3 years ago
3 0

Answer:

1. (y-18 >x-13)

2 . x-18>y-13

Step-by-step explanation:

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The caller times at a customer service center has an exponential distribution with an average of 22 seconds. Find the probabilit
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Answer:

The probability that a randomly selected call time will be less than 30 seconds is 0.7443.

Step-by-step explanation:

We are given that the caller times at a customer service center has an exponential distribution with an average of 22 seconds.

Let X = caller times at a customer service center

The probability distribution (pdf) of the exponential distribution is given by;

f(x) = \lambda e^{-\lambda x} ; x > 0

Here, \lambda = exponential parameter

Now, the mean of the exponential distribution is given by;

Mean =  \frac{1}{\lambda}  

So,  22=\frac{1}{\lambda}  ⇒ \lambda=\frac{1}{22}

SO, X ~ Exp(\lambda=\frac{1}{22})  

To find the given probability we will use cumulative distribution function (cdf) of the exponential distribution, i.e;

    P(X\leq x) = 1 - e^{-\lambda x}  ; x > 0

Now, the probability that a randomly selected call time will be less than 30 seconds is given by = P(X < 30 seconds)

        P(X < 30)  =  1 - e^{-\frac{1}{22} \times 30}

                         =  1 - 0.2557

                         =  0.7443

7 0
3 years ago
Find all values of c such that
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Step-by-step explanation:

c/(c - 5) = 4/(c - 4)

By Cross-multiplying,

We have c(c - 4) = 4(c - 5).

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=> c² - 8c + 20 = 0

Since the discriminant is negative,

there are no real solutions for c.

However, there exist complex solutions for c.

Using the Quadratic Formula,

c = [8 ± √(-16)]/2

=> c = 4 ± √(-4)

=> c = 4 ± 4i or c = 4(1 ± i).

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2 years ago
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Answer:

volume = \pi {r}^{2} h \\  = 3 \times  {5}^{2}  \times 12 \\  = 900 \:  {ft}^{3}

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Suppose each cube in this right rectangular prism is a 1 2 -inch unit cube. What are the dimensions of the prism? What is the vo
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Answer:

<h2><u><em>The lengths of the sides of a small cube are = foot. Volume of cube = side x side x side. V = = cubic foot. Number of small cubes that can be packed in the prism = = = = 180 cubes. Hence, 180 cubes can be packed into rectangular prism. Part B: Unit cube volume is 1x1x1 =1 cubic foot. So, 180 cubes will have 180 cubic foot volume.</em></u></h2>

Step-by-step explanation:

4 0
2 years ago
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