Solve the floowing systems of euations algebrically.
x+8=z
2x+8-2z=4
-x-y+3z=2

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is

Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.

One of the problems with our current election system is? ?