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diamong [38]
3 years ago
6

Affirmative action commitments by many organizations have led to an increase in the number of women in executive positions. Sate

llite Office Systems has vacancies for two executives that it will fill from among four women and six men. What is the probability that no woman is selected
Mathematics
2 answers:
chubhunter [2.5K]3 years ago
4 0

Answer:

0.3333 = 33.33%

Step-by-step explanation:

We have 2 vacancies that will be filled from among 10 people, so the number of combinations we have is a combination of 10 choose 2, which is 10*9/2 = 45 possibilities.

Among these possibilities, the cases where the 2 vacancies are occupied by men is:

We have 6 men for 2 vacancies, so is a combination of 6 choose 2, which is 6*5/2 = 15 cases.

From the 45 cases we have, 15 are cases that no woman was selected, so the probability that no woman is selected is 15/45 = 1/3 = 0.3333 = 33.33%

morpeh [17]3 years ago
3 0

Answer:

The probability that no woman is selected is 1/3 or 0.33

Step-by-step explanation:

Now, before proceeding, it is necessary to firstly determine the Probability of selecting a single woman and the probability of selecting one man.

In the question, we were told that the vacancies for the two executives must be filled from a committee of four women and six men. This means that the total number of people from which the two executives are to be chosen or selected from is ten (10).

Then the probability of picking one man out of the group of of four women and six men is = the number of men/total number of people in the group = 6/10

Similarly, the probability of picking or selecting a woman out of the entire group =

the number of women in the group/total number of people therein = 4/10

The probability that a woman will not be selected is then =

The probability that two men will be selected to fill up the vacancies (This selection is without replacement).

P(selecting two men) =

6/10 × 5/9

= 30/90

= 1/3 or 0.33

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Oliga [24]
Jasmine is running faster.

Since the track is 1/5 of a km and she can run 1km in 7 minutes, divide seven to get 1.4.

This means that Jasmine can run one lap in 1.4 minutes.

Since a Kyah can run 6 laps in 10 minutes, do 10 divided by 6 and the answe will be 1.6 repeating.

1.4 < 1.6 so Jasmine is faster
3 0
3 years ago
Can somebody explain how trigonometric form polar equations are divided/multiplied?
koban [17]

Answer:

Attachment 1 : Option C

Attachment 2 : Option A

Step-by-step explanation:

( 1 ) Expressing the product of z1 and z2 would be as follows,

14\left[\cos \left(\frac{\pi \:}{5}\right)+i\sin \left(\frac{\pi \:\:}{5}\right)\right]\cdot \:2\sqrt{2}\left[\cos \left(\frac{3\pi \:}{2}\right)+i\sin \left(\frac{3\pi \:\:}{2}\right)\right]

Now to solve such problems, you will need to know what cos(π / 5) is, sin(π / 5) etc. If you don't know their exact value, I would recommend you use a calculator,

cos(π / 5) = \frac{\sqrt{5}+1}{4},

sin(π / 5) = \frac{\sqrt{2}\sqrt{5-\sqrt{5}}}{4}

cos(3π / 2) = 0,

sin(3π / 2) = - 1

Let's substitute those values in our expression,

14\left[\frac{\sqrt{5}+1}{4}+i\frac{\sqrt{2}\sqrt{5-\sqrt{5}}}{4}\right]\cdot \:2\sqrt{2}\left[0-i\right]

And now simplify the expression,

14\sqrt{5-\sqrt{5}}+i\left(-7\sqrt{10}-7\sqrt{2}\right)

The exact value of 14\sqrt{5-\sqrt{5}} = 23.27510\dots and (-7\sqrt{10}-7\sqrt{2}\right)) = -32.03543\dots Therefore we have the expression 23.27510 - 32.03543i, which is close to option c. As you can see they approximated the solution.

( 2 ) Here we will apply the following trivial identities,

cos(π / 3) = \frac{1}{2},

sin(π / 3) = \frac{\sqrt{3}}{2},

cos(- π / 6) = \frac{\sqrt{3}}{2},

sin(- π / 6) = -\frac{1}{2}

Substitute into the following expression, representing the quotient of the given values of z1 and z2,

15\left[cos\left(\frac{\pi \:}{3}\right)+isin\left(\frac{\pi \:\:}{3}\right)\right] \div \:3\sqrt{2}\left[cos\left(\frac{-\pi \:}{6}\right)+isin\left(\frac{-\pi \:\:}{6}\right)\right] ⇒

15\left[\frac{1}{2}+\frac{\sqrt{3}}{2}\right]\div  \:3\sqrt{2}\left[\frac{\sqrt{3}}{2}+-\frac{1}{2}\right]

The simplified expression will be the following,

i\frac{5\sqrt{2}}{2} or in other words \frac{5\sqrt{2}}{2}i or \frac{5i\sqrt{2}}{2}

The solution will be option a, as you can see.

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densk [106]

Answer:

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Step-by-step explanation:

plug in t=2 into equation

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Answer:

Step-by-step explanation:

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