Tristan records the number of customers who visit the store each hour on a saturday. his data representing the first seven hours are 15, 23, 12, 28, 20, 18, and 23. how many customers visited the store during the eighth hour if the median number of customers per hour did not change? show all your work and explain how you arrived at your answer.

20

Step-by-step explanation:

Given that Tristan records the number of customers who visit the store each hour on a Saturday.

His data representing the first seven hours are 15, 23, 12, 28, 20, 18, and 23.

There are 7 entries and if written in ascending order 12,15,18,20,23,23,28

Median = middle entry -20

If one more entry is added then we have two middle entries and median would be the average of the two.

Hence if median is to remain the same, eighth hour no of customers visited should be 20

Answer is 20

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

source:

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo