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mylen [45]
3 years ago
7

1. McDonald's has decided to keep their doors open all night. There are 15 employees that have volunteered for the night shift.

a) If a night crew consists of 4 employees, how many different crews are possible? he employees are ranked 1,2,..,15 in order of competence, how many of b) If t these crews would not have the best employee? c) How many of the crews would have at least 1 of the 5 best employees? d) If one of these crews is selected at random to work on a particular night, what is the probability that the best employee will not work that night?
Mathematics
1 answer:
Sergio039 [100]3 years ago
8 0

Answer:

A. 3 and there will be 3 employees left

B. i dont understand the question

C. All of them

D. 1/3

Step-by-step explanation:

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Equation for (5,-4) (-3,2)
tatuchka [14]

Answer:

y = -\frac{3}{4}x-\frac{1}{4}

Step-by-step explanation:

The equation for a linear function found from two given points is:  y = mx + b, where m = slope and b = y-intercept.  You can find slope from slope formula:

\frac{(y_{2}-y_{1})}{(x_{2}-x_{1})}

Given points (5, -4) and (-3, 2):

\frac{(2-(-4))}{(-3-5)}=\frac{6}{-8}=-\frac{3}{4}

Using the value m = -\frac{3}{4} and the point (5, -4) for x and y:

y = mx + b

-4 = 5(-3/4) + b

-4 = -15/4 + b

-4 = -3.75 + b

-1/4 = b

y = -\frac{3}{4}x-\frac{1}{4}

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3 years ago
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Marrrta [24]

Answer:

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What is the area enclosed by the curves???
slava [35]
The x and y axis
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8 0
2 years ago
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Find the formula for an exponential function that passes through the two points give.
Ksenya-84 [330]

Answer:

y=3(2)^{x}

Step-by-step explanation:

Given.

Two points are given.

(x, y)=(-1,\frac{3}{2}) and (x, y)=(3,24)

An exponential function is in the general form.

y=a(b)^{x}-------(1)

We know the points  (-1,\frac{3}{2}) and (3,24)

put the first point value in equation 1

\frac{3}{2}=a(b)^{-1}

\frac{3}{2}=\frac{a}{b}

a=\frac{3}{2}\times b--------(2)

put the second point value in equation 1

24=a(b)^{3}----------(3)

Put the a value from equation 2 to equation 3

24=\frac{3}{2}\times b(b)^{3}

b^{3+1}=\frac{24\times 2}{3}

b^{4} = 16\\b=\sqrt[4]{16} \\b=2

Put the b value in equation 2

a=\frac{3}{2}\times 2

a=3

Put the a and b value in equation 1

y=3(2)^{x}

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6 0
3 years ago
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elixir [45]

Answer:

r = 3

Step-by-step explanation:

x^2 + 6x + y^2 - 8y = - 16

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x^2 + 6x + (3)^2 + y^2 - 8y + (-4)^2 = - 16

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x^2 + 6x + 9 + y^2 - 8y + 16 = - 16 + 9 + 16  

Combine on the right.

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Represent the 2 quadratics as perfect squares.

(x + 3)^2 + y - 4)^2 = 9

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