5. In a plane, Line AB is parallel to Line CD. Angle ABC is a right angle. What can you conclude? I. Line AB is perpendicular to Line BC.
II. Line BC is perpendicular to Line CD.
III. Line BC is perpendicular to Line AD.

I, II and III
I and II
I only II only

find out the value of b

step-by-step explanation:

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

32.5 is the answer i got thats the answer