What conclusion can be drawn about lines AB and CD? They are parallel because
lines AB and CD are vertical
lines.
78°
75°
They are not parallel because
the two given angles are not
supplementary.
They are not parallel because
the two given alternate
interior angles are not
congruent.

honestly bro aint no one got time to answer these dumb question just do it p***y

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb

yes.. it's proven to be 36.