How will adding the value 20 affect the mean and median of the data set 40, 50, 60, 60, 80, 100?
a. mean and median will decrease
b. mean will decrease, but median will stay the same
c. mean will decrease, but median will increase
d. both mean and median will stay the same
!

what do you mean by fog

step-by-step explanation:

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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