Two busses leave Billings at the same time. The Seattle bus heads west on I-90 at a speed of 73 miles per hour while the Chicago
2 answers:
Answer:
After 3.5 hours buses will be 532 miles apart.
Step-by-step explanation:
Here one bus is moving west and other is moving east. That is they are moving in opposite direction.
Velocity of Seattle bus = 73 miles per hour west
Velocity of Chicago bus = 79 miles per hour east
Relative velocity = 73 + 79 = 152 miles per hour
We need to find time for which for their separation 532 miles.
Time,
After 3.5 hours buses will be 532 miles apart
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Answer:
1) The probability that ten students in a class have different birthdays is 0.883.
2) The probability that among ten students in a class, at least two of them share a birthday is 0.002.
Step-by-step explanation:
Given : Assume there are 365 days in a year.
To find : 1) What is the probability that ten students in a class have different birthdays?
2) What is the probability that among ten students in a class, at least two of them share a birthday?
Solution :
Total outcome = 365
1) Probability that ten students in a class have different birthdays is
The first student can have the birthday on any of the 365 days, the second one only 364/365 and so on...
The probability that ten students in a class have different birthdays is 0.883.
2) The probability that among ten students in a class, at least two of them share a birthday
P(2 born on same day) = 1- P( 2 not born on same day)
The probability that among ten students in a class, at least two of them share a birthday is 0.002.