Maria received a 75% on her government test and an 83% on her algebra 2 test. the
mean grade on the government test was 72% with a standard deviation of 5%. the
average grade on the algebra 2 test was 81% with a standard devotion of 4%. on which test did maria do better?

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:

answer: i guess 5 units?

step-by-step explanation:

the answer is:

mean: 6

mad: 2.14