Answer:
≈ 
%
Step-by-step explanation:
The person will wait for no more than 20 minutes if they arrive when the bus is going to stop in 20 minutes, which means that they must arrive 25 minutes after the previous bus stops. So the probability that the person will not wait for more than 20 minutes will be 
which is about 44.4%.
Answer:
The answer is stan twice
Step-by-step explanation:
simple
Answer:
4!
Step-by-step explanation:
Given four numbers 2, 4, 6, 8.
The numbers can be arranged to form an odd number which is less than 300.
That means we have three spaces to fill this. We can try out the different combination of the numbers.
Note that the numbers should be odd. So, in the unit digit should only be 5. 2, 4, 8 would make the number even.
Also, the first digit can only be two because other numbers would make it bigger than 300.
So, 2 ___ 5 is fixed. The middle digit could be any of the four.
So, 225; 245; 255 and 285 all satisfy the conditions.
So, four numbers can be formed.
Answer:
m-a = n
Step-by-step explanation:
a=m-n
Subtract m from each side
a-m = m-n-m
a-m = -n
Multiply each side by -1
-a+m = n
m-a = n
