Answer:
The probability that none of the $100 bills are selected is 79.6%.
Step-by-step explanation:
The urn contains forty $1 bills and ten $100 bills. This gives a total of 50 bills in the urn.
To draw 3 dollar bills one at a time out of an urn, the probability of not selecting a $100 bill, decreases with each selection.
And the probability of not selecting a $100 bill is the probability of selecting a $1 bill in the first selection = 80% (40/50 x 100).
The probability of selecting a $1 bill the second time = 79.6% (39/49).
The probability of selecting a $1 bill the third time = 79.2% (38/48).
The sum of the probabilities divided by 3 = 79.6% (238.8/3)
b) Probability arises when there is a chance that an event may occur from a set of events that could have occurred. It is based on an estimate that one event happens when all the events in the set are given no less equal chance.
Before we do anything, we need to find out how fast we are going in the first place.
We know we are going 1.5 miles per minute and that there are 60 minutes in an hour, so we can find our speed in mph. All we have to do is multiply 60 and 1.5.
That gives us 90 mph.
Next, the problem says that we reduce our speed by 15 mph, so you would subtract 15 from 90.
That gives us 75 mph.
The last thing the problem says is that we reduce our speed by one third, so first we need to know what one third of 75 is. We can find that by dividing 75 by 3.
That gives us 25
But we aren't finished yet! We still need to subtract 25 from 75 to get our current speed. When we do this we get our final answer of...
50 mph
If you need any further explanation, just let me know!
Answer: Ooh, okay. Have fun then I guess.
7=thousands
8=hundreds
5=tens
4=ones
2=tenths
0=hundredths
9=thousandths
Answer:
7%
Step-by-step explanation:
(15/220) x 100 = 6. 8182 = 7%
to convert to percentage multiply by 100
To convert to the nearest whole number, look at the first number after the decimal. If it is greater or equal to 5, add 1 to the number after the decimal. 8 is greater than 5, so add one to 6
