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Mashcka [7]
3 years ago
7

Four members from a 45​-person committee are to be selected randomly to serve as​ chairperson, vice-chairperson,​ secretary, and

treasurer. The first person selected is the​ chairperson; the​ second, the​ vice-chairperson; the​ third, the​ secretary; and the​ fourth, the treasurer. How many different leadership structures are​ possible?
Mathematics
1 answer:
wariber [46]3 years ago
6 0

Answer:

3575880

Step-by-step explanation:

We need to use Permutation method,

nPr= \frac{n!}{(n-r)!}

Where n is the sample of size and r the combination considered, so

n=45\\r=4\\45P4= \frac{45!}{(45-4)!}\\45P4 = 3575880

There is 3575880 possibilities to make leadership structures in that committee

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Irina-Kira [14]
Let y(t) represent the level of water in inches at time t in hours. Then we are given ...
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  y(0) = 30
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We observe that a function of the form
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  y'(t) = 2a(t -b)

We can find the constants "a" and "b" from the given boundary conditions.
At t=0
  30 = a(0 -b)²
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At t=1
  29 = a(1 - b)² . . . . . . . . . substitute for t
  29 = 30(1 - b)²/b² . . . . . substitute for a
  29/30 = (1/b -1)² . . . . . . divide by 30
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The value of b is the time it takes for the height of water in the tank to become 0. It is 30+√870 hours ≈ 59 hours 29 minutes 45 seconds
5 0
3 years ago
What are the solutions to the equation 4x^3 =36x
givi [52]

Answer:

The answer to your question is:

 x₁ = 0

x₂ = -3

x₃ = 3

Step-by-step explanation:

Equation   4x³ = 36 x

Process

                   4x³ - 36x = 0

                  4x (x² - 9) = 0

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      Finally

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                x = 0/4        x₂ = -3               x₃ = 3

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3 years ago
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I agree with the other person ^^^
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You'd need to use it for more than 50 hours.
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