25 points asap brainlist to correct answer
find the area of a triangle with a base of (4x+3) and a height of (4x-3)

Step-by-step explanation:

So we know already that, in order to find the area of a triangle, we need to find base * height / 2. That doesn't change when we have variables involved, it just gets a little more complicated.

The trick is we need to just dumb down and not overthink anything. Just foil like normal.

FOIL = First Outer Inner Last, it's a way of multiplying. Basically, you take multiply the first variables, the second variables, the inner variables, and then the last variables.

Now you could just keep it in that form, but I personally would rather simplify it into decimals to get

Additionally, if your answer choices do not include decimals, try either 8x^2 - 9/2 , or (16x^2 - 9)/2

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:

a is 8.b is 10.c is 10.5. d is -.5

step-by-step explanation:

just minus the smallest number from the biggest.