-6a - 12 + 3a is the correct answer
Answer:
Perpendicular
Step-by-step explanation:
Calculate the slopes m of the segments using the slope formula.
m = 
Parallel lines have equal slopes
The product of the slopes of perpendicular lines equals - 1
(x₁, y₁ ) = A(0, 0) and (x₂, y₂ ) = B(e, f)
=
= 
Repeat with (x₁, y₁ ) = C(0, e) and (x₂, y₂ ) = D(f, 0)
=
= - 
Thus AB and CD are perpendicular since
× -
= - 1
Answer:
i think 5x^2-5
Step-by-step explanation:
(3X)(2X-2)
5X^2-5
The correct answer is C! Because 21/2 = 10.5 and 10.5 x 4.5 = 47.25
I'm gonna need some sort of diagram...