Write at least four rational numbers between -2/5 and -1/3.
2 answers:
Answer:
-0.34, -0.35, -0.36, -0.37
Step-by-step explanation:
A rational number can be any number, negative or positive, so long as if the decimals (if any) terminate at some point or at least repeats itself.
- = -0.4
- = -0.333_ (This means that the digit "3" is repeated forever)
Thus, the possible rational numbers can be:
-0.34
-0.35
-0.36
-0.37
-0.38
-0.39
You can even write decimals like -0.334 since it is bigger than -0.333_ but smaller than -0.4.
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Answer: 0.9730
Step-by-step explanation:
Let A be the event of the answer being correct and B be the event of the knew the answer.
Given:
If it is given that the answer is correct , then the probability that he guess the answer
By Bayes theorem , we have
Hence, the student correctly answers a question, the probability that the student really knew the correct answer is 0.9730.