Assuming a fair die,
probability of winning 0.25 = (2/6) = 1/3
probability of losing 0.25 = (4/6) = 2/3
Expected win
= sum (proba.*winning)
=0.25*(1/3) + (-0.25)(2/3)
=-0.25/3
= - (1/12) dollars (negative sign means expecting to lose)
Turn them all into decimals so you can clearly see the difference between them
8 1/9 = 8.11
8.117
8.28
163/20 = 8.15
8 1/9, 8.117, 163/20, 8.28 is your answer
1160 dollars if you take 5/6 away from 1200 you get 40 subtract 40 from 1200 and you get your answer
If you want to round 49.39 to the nearest tenths place you will have to look at your tenths digit.
The digit is 3, right?
Look at the next number after 3. It is the number 9 for the hundredths place. If the number is bigger than 5 you round it. If it is smaller, you keep it the same. 9 is bigger than 5 so you make the 3 into a 4.
Then, you're answer is 49.4 or 49.40 (Which are basically the same answer)
It also works the same with the other digits. Simple, right? :)
Answer: the lines on the outside mean absolute value and the absolute value of -3 is 3
Step-by-step explanation:
