Which of the following expressions is correct?
) = 21
-(21) = 21
) = -21
(-21) = 21

A

Step-by-step explanation:neg X negative = positive

the answer is A

Step-by-step explanation:

can i get the link to the assignment?

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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