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posledela
3 years ago
10

Suppose that six guests check their hats when they arrive at the Cigar Parlor and that these hats are returned randomly when the

y leave. Determine the probability that no guest will receive the proper hat.
Mathematics
1 answer:
marissa [1.9K]3 years ago
4 0

Answer:

0.1667

Step-by-step explanation:

There are 6! ways to arrange the hats. The number of ways for which no guest will receive the proper hat is 5! (since there are 5 wrong hats for the first guest, 4 for the second guest, and so on). The probability that no guest will receive the proper hat is:

P=\frac{5!}{6!}=0.1667

The probability is 0.1667.

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Find four numbers that form a geometric progression such that the third term is greater than the first by 12 and the fourth is g
olchik [2.2K]

If x is the first number in the progression, and r is the common ratio between consecutive terms, then the first four terms in the progression are

\{x,xr,xr^2,xr^3\}

We want to have

\begin{cases}xr^2-x=12\\xr^3-xr=36\end{cases}

In the second equation, we have

xr^3-xr=xr(r^2-1)=36

and in the first, we have

xr^2-x=x(r^2-1)=12

Substituting this into the second equation, we find

xr(r^2-1)=12r=36\implies r=3

So now we have

\begin{cases}9x-x=12\\27x-3x=36\end{cases}\implies x=\dfrac32

Then the four numbers are

\left\{\dfrac32,\dfrac92,\dfrac{27}2,\dfrac{81}2\right\}

4 0
3 years ago
Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. find the missing te
Allisa [31]

The missing term in the provided quadratic equation is 10x if the roots of a quadratic equation are 5 ± 3i.

<h3>What is a complex number?</h3>

It is defined as the number which can be written as x+iy where x is the real number or real part of the complex number and y is the imaginary part of the complex number and i is the iota which is nothing but a square root of -1.

The question is incomplete.

The complete question is in the picture, please refer to the attached picture.

We have the roots of a quadratic equation:

5 ± 3i

To find the quadratic equation:

(x - (5+3i))(x - (5-3i))

\rm =x^2+x\left(-\left(5-3i\right)\right)-\left(5+3i\right)x-\left(5+3i\right)\left(-\left(5-3i\right)\right)

= x² -10x + 34

The missing value is 10x

The quadratic equation is:

= x² -10x + 34

Thus, the missing term in the provided quadratic equation is 10x if the roots of a quadratic equation are 5 ± 3i.

Learn more about the complex number here:

brainly.com/question/10251853

#SPJ1

6 0
2 years ago
Each leg of a 45°-45°-90° triangle measures<br> 14 cm. What is the length of the hypotenuse?
4vir4ik [10]

For a 45-45-90 angle the hypotenuse is s * square root of 2

so the hypotenuse is 14 * square root of 2 or 19.8

:)))

6 0
3 years ago
Read 2 more answers
Hey guys please help
omeli [17]
True.
Angle c=anglez
Angle RHC=angle XHZ
Therefore they’re similar.
Pls mark me as the Brainliest as I really need it, thanks!
7 0
2 years ago
Which number could be placed in the blank to make the equation true? 6×5/6= ×1/6
yaroslaw [1]
30 is the answer
6*5\6 is 5
And 30 is needed to be multiplied y one to get five
7 0
3 years ago
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