Answer:
Step-by-step explanation:
yes
yes but that really deep i don't know man could be a trick question
4x-20 is the same as x+x+x+x-20
You do pi times radius squared
(6a-4)°=(2a+68)°
6a-2a=68+4
4a=72
a=72/4
a=18
n=-6
