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1 year ago

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For each fraction, decimal, or percent, write the equivalent number from the list below. 0.68, 19/50, 9/20, 80%, 0.54. A. 38% __

___ B. 4/5 ______ C. 17/25_______. D. 27/50_______. E. 0.45_______

1 answer:

ICE Princess25 [194]1 year ago

7 0

Answer:

0.45=9/20
27/50=0.54
4/5=80
17/25=0.68
38%=19/50

Step-by-step explanation:

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2 years ago

Read 2 more answers

A problem on a multiple-choice quiz is answered correctly with probability 0.9 if a student is prepared. An unprepared student g

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Answer:

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Step-by-step explanation:

The question above is a application of conditional probability.

The formula to use is Baye's Theorem for conditional probability.

From the above question we have the following information:

Probability of answering correctly when prepared = 0.9

Probability of not answering correctly when prepared = 1 - 0.9 = 0.1

Probability of choosing the right answer = 1/4 = 0.25

Probability of choosing the wrong answer = 1 - 0.25 = 0.75

Number of students that prepare for the quiz = 75% = 0.75

Therefore number of students that did not prepare for the quiz = 1 - 0.75

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Hence,

The probability of not preparing but choosing the correct answer =

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Is calculated as :

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= 0.08475

Therefore, the chance that Mr X did not prepare for the quiz but he gives the right answer = 0.08475

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