Pls help
given that A= 1/2( a+c)h, express h in terms of A, a and c

What are you trying to say? Like what each variable means or...

Are you trying to find the area of a triangle???

yes

step-by-step explanation:

give me the question

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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: