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Akimi4 [234]
3 years ago
15

You write the letters of the word DEMOGRAPHICS on separate slips of paper and place them in a bowl. Your friend will draw a slip

of paper out of the bowl without looking. What is the probability that your friend will draw a vowel? Enter your answer as a fraction using the / symbol, like this: 42/53
Mathematics
1 answer:
Lesechka [4]3 years ago
8 0

Answer:

1/3

Step-by-step explanation:

we have 12 letters

e a i o

4 vowels

so 4/12=1/3

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Please helpppp it has to do with P(A U B)
Katyanochek1 [597]
P(A)=0.5, P(B)=0.6, P(A\cup B)=0.8

We find the probability of intersection using the inclusion/exclusion principle:


P(A\cap B)=P(A)+P(B)-P(A\cup B)=0.3


By definition of conditional probability,


P(A\mid B)=\dfrac{P(A\cap B)}{P(B)}=\dfrac{0.3}{0.6}=0.5


For A and B to be independent, we must have


P(A\cap B)=P(A)\cdot P(B)

in which case we have 0.3=0.5\cdot0.6, which is true, so A and B are indeed independent.


Or, to establish independence another way, in terms of conditional probability, we must have

P(A\mid B)\cdot P(B)=P(A)\cdot P(B)\implies P(A\mid B)=P(A)


which is also true.
7 0
3 years ago
20. Rectangle ABCD is transformed to create rectangle EFGH. What sequence of
Feliz [49]

Answer:

B

Step-by-step explanation:

rotate 180 --> translate up by 4:  (x,y)--> (-x,-y) --> (-x,-y +4)

8 0
3 years ago
Complete each question by choosing or typing in the best answer.​
Fantom [35]
Where are the questions
7 0
3 years ago
H0w to subtract 3/5 - 2/9 =
pochemuha
So here first you have to have same denominators to subtract and add.
to make same denominator you have to multiply something to them which meets up to their lowest common multiple (LCM). so here the easiest thing is multiply each denominator to the other but remember you have to multiply them to the numerator too.
3×9/5×9-2×5/9×5
so it becomes
27/45-10/45
17/45
as you cant bring to its simplest form since the answer in a prime no. leave it like that.
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3 years ago
Find the slope of the line that passes between the points (-3, 14) and (4,-6).
Thepotemich [5.8K]
M=20/7
Hope that helps
5 0
3 years ago
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