Answer:
20
Step-by-step explanation:
The rectangle is 2 x 8.
2 + 2 + 8 + 8
Answer:
slope perpendicular= -1
Step-by-step explanation:
3x-3y=-63
-3y=-3x-63 divide both sides by -3
y=1x+21
Perpendicular lines have slopes that are the opposite of the reciprocal of each other