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pychu [463]
3 years ago
14

The letters of the alphabet are written on flashcards and dropped into a bag. A flashcard is randomly selected, kept out of the

bag, and then another flashcard is randomly selected. Which product gives the probability that both flashcards have a vowel (a, e, i, o, or u) written on them?
Mathematics
2 answers:
ladessa [460]3 years ago
6 0
5:26 Hope I helped :)
ArbitrLikvidat [17]3 years ago
5 0
For it being a strict vowel, there is a 5:26 ratio
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Simplify 5x + 2(x - 3) = -2(x - 1)
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Answer:

x=8/9

Step-by-step explanation:

5x+2(x-3)=-2(x-1)

1) Distribute 2 to x and -3:

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2) Distribute -2 to x and -1:

5x+2x-6=-2x+2

3) Combine alike terms:

7x-6=-2x+2

4) Add 2x to both sides:

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5) Add 6 to both sides:

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6) Divide both sides by 9:

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Ten pieces of paper numbered consecutively from 1 to 10 are put into a hat. if three pieces of paper are drawn at random from th
DaniilM [7]

There are 5 even numbers from 1 to 10.


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3 years ago
Dean Halverson recently read that full-time college students study 20 hours each week. She decides to do a study at her universi
romanna [79]

Answer: The p-value is 0.154.

Step-by-step explanation:

Since we have given that

We claim that

Null hypothesis :

H_0:\mu=20

Alternate hypothesis :

H_1:\mu

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Sample mean = 18.5 hours

Sample standard deviation = 4.3 hours

Sample size n = 35

So, test statistic would be

z=\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{18.5-20}{\dfrac{4.3}{\sqrt{35}}}\\\\z=\dfrac{-1.5}{0.726}\\\\z=-2.066

So, the  p value would be 0.154.

Hence, the p-value is 0.154.

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