Answer:
use this website. It saves lives
https://www.math10.com/en/problem-solver/
Step-by-step explanation:
Answer:
Two lines that intersect and form right angles are called perpendicular lines. The symbol ⊥ is used to denote perpendicular lines.
First find highest common factor of 12 and 84=12
12(t-7)
2 2/3 I think. Hope I helped!
