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andre [41]
3 years ago
13

What is 5/18 + 7/12?

Mathematics
2 answers:
Flauer [41]3 years ago
8 0
5/18+7/12

=10/36+21/36

=31/36
Lena [83]3 years ago
7 0
Lcm=36

so, 5/18=7/12=10/36+21/36=31/36(cannot be simplified).ur welcome

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Use the multiplication rule to find the probability that the first four guesses are wrong and the fifth is correct. That is, fin
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Complete question is;

Multiple-choice questions each have 5 possible answers, one of which is correct. Assume that you guess the answers to 5 such questions.

Use the multiplication rule to find the probability that the first four guesses are wrong and the fifth is correct. That is, find P(WWWWC), where C denotes a correct answer and W denotes a wrong answer.

P(WWWWC) =

Answer:

P(WWWWC) = 0.0819

Step-by-step explanation:

We are told that each question has 5 possible answers and only 1 is correct. Thus, the probability of getting the right answer in any question is =

(number of correct choices)/(total number of choices) = 1/5

Meanwhile,since only 1 of the possible answers is correct, then there will be 4 incorrect answers. Thus, the probability of choosing the wrong answer would be;

(number of incorrect choices)/(total number of choices) = 4/5

Now, we want to find the probability of getting the 1st 4 guesses wrong and the 5th one correct. To do this we will simply multiply the probabilities of each individual event by each other.

Thus;

P(WWWWC) = (4/5) × (4/5) × (4/5) × (4/5) × (1/5) = 256/3125 ≈ 0.0819

P(WWWWC) = 0.0819

4 0
3 years ago
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Romashka [77]

Answer:

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<u>--------------------------------</u>

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Answer:

Step-by-step explanation:

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