The school bus Evie rides is scheduled to arrive at her stop at 8:20 a. m. each day.
The table below shows the actual arrival times of the bus for several days that
were randomly selected over the past few months.
BUS ARRIVAL TIMES (a. m.)
8:21
8:22
8:21
8:20
8:21
8:20
8:20
8:20
8:19
8:20
8:19
8:18
8:20
8:20
8:17
8:19
8:23
8:24
8:25
8:24
What is the probability that the bus will arrive at Evie's stop after 8:20 a. m.?
Write your answer as a fraction in simplest form.

2/5 if you don’t include 8:20

3/4 if you include 8:20

Step-by-step explanation:

1. There are 20 times, and 8 times past 8:20, so it would be, 8/20 so simplified is, 2/5, (8 divided by 4, 20 divided by 4)

2. There are 20 different times, and 15 past 8:20 including 8:20, so it is 15/20, when simplified it is, 3/4, (15 divided by 5, over 20 divided by 5)

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

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