Can you answer this question

the median is 7.5

Step-by-step explanation:

arrange the frequency table in order from minimum to maximum.

5, 5, 7, 8, 15, 20

so, the median on the numbers above is between 7 and 8

                  7 + 8

median =    =   7.5

                      2

therefore, the median is 7.5

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

source:

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.