Answer:
permeant
Step-by-step explanation:
Stroking with one pole of a permanent magnet works because it aligns the atoms in the nail to line up in the same polar direction, giving the nail a north and a south magnetic pole.
The first and the difficult thing is you need to tell that
x^2-4xy+4y^2 = ( x - 2y )^2
so from question you know 3x - 6y = x - 2y = 9z
finial : ( x - 2y )^2 = ( 9z )^2=81z^2
so the answer is D . Hope this would help you .
Solve for x
4 12
--- = --- 4x=36 36/4=9 x=9 = PQ=9in
3 x
4 18
--- = --- 4x=54 54/4=13.5 x=13.5 QR=13.5in
3 x
4 24
--- = --- 4x=72 72/4=18 x=18 PR=18in
3 x
18+13.5+9 = 40.5
Therefore, the perimeter of ΔPQR = 40.5inches
Answer:
A
Step-by-step explanation:
11^2 x 3.14 x 10 = 3799.4
