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mars1129 [50]
2 years ago
13

Help me please i can't understand this:(​

Mathematics
2 answers:
Alex777 [14]2 years ago
8 0

Answer:

let me know the questions ill see if i can help

Step-by-step explanation:

sweet [91]2 years ago
7 0

Answer:

Where is a questionn? How can I answer you if you don't have a question

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Dawn enjoys exercising on the hiking trail by her house. She ran 2/5 of
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Answer:

11/15 of  the trail

Step-by-step explanation:

Step one:

given data

She ran 2/5 of the trail on Monday

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Required

The total distance covered for Monday and Tuesday

Step two:

Total= 2/5+1/3

lcm= 15

Total= 6+5/15

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In a state where license plates contain six digits, what is the probability that the license number of a randomly selected car h
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Answer:

Step-by-step explanation:

Given : In a state where license plates contain six digits.

Probability of that a number is 9 = \dfrac{1}{10}   [Since total digits = 10]

We assume that each digit of the license number is randomly selected  .

Since each digit in the license plate is independent from the other  and there is only two possible outcomes for given case (either 9 or not), so we can use Binomial.

Binomial probability formula:  P(X=x)=^nC_xp^x(1-p)^{n-x}

, where n= total trials , p = probability for each success.

Let x be the number of 9s in the license plate number.

X\sim Bin(n=6, p=\dfrac{1}{10}})

Then, the probability that the license number of a randomly selected car has exactly two 9's will be :

P(X=2)=^6C_2(\dfrac{1}{10})^2(1-\dfrac{1}{10})^{6-2}\\\\=\dfrac{6!}{2!(6-2)!}(\dfrac{1}{100})(\dfrac{9}{10})^4=0.098415

Hence, the required probability = 0.098415

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3 years ago
Learn with an example
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Step-by-step explanation:

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I think that you are reliable


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