HELP PLZ

c

Step-by-step explanation:

you have to get the common terms together so you would start by doing 20x-25x=-5x then 15y-5y=10y then 10z+3z=13z the - becomes a + in the z because if you subtract a negative, it becomes a positive therefore making it a +. Also this is for #4 its the same process for the rest #5 is A #3 is A #2 is C #1 is C

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:

which expression represents the approximate length of bc?

step-by-step explanation: