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gavmur [86]
3 years ago
8

A student is to answer a multiple choice question that has five possible answers. The probability that the student knows the ans

wer is .90 and the probability that the student does not know the answer and guesses is .10 ; ""guesses"" means the student picks one of__________
Mathematics
1 answer:
bixtya [17]3 years ago
5 0

Answer:

means that he picks any of the 5 choices at random

Step-by-step explanation:

"guesses" means that the student will pick at random any of the 5 choices that he has with the hope to select the right one. Then we are assuming that any of the 5 choices are equally likely to be the correct one , so there is no answer that is closest to be the right one ( we do not have any information that can judge whether any answer is more likely to be the right one with respect to the others).

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Answer:

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Step-by-step explanation:

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3 years ago
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Pie

Answer:

The factored form is (sin x +2)(sin x-1)

Step-by-step explanation:

We have been given the trigonometric function \sin^2 x +\sinx-2

We can factor this by AC method. In AC method we multiply the term a and c and then write the middle term b in such a way that the sum/difference is equal to the product 'ac'

Using the method, we can write sinx as 2sinx -sinx

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Now, we group the first two terms and the last two terms

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7 0
3 years ago
Read 2 more answers
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lidiya [134]

Answer:

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Step-by-step explanation:

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\frac{9x}{9} = \frac{25}{9}  \\x = \frac{25}{9}\\

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

hope this helps

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