Which is not true about the random sample method? a. each member of the population has an equal chance of being selected. b. the sample is likely to represent one portion of the population. c. computers can be used to select the sample. d. all components of the population are approximately proportionally represented.

B. The sample is likely to represent one portion of the population.

This is impossible to say because it's random.

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:

da freeck kinda math is this just drop out

step-by-step explanation: