Parallel slope = 2
This is because the original line has slope 2. Parallel lines have equal slopes.
--------------------------
Perpendicular slope = -1/2
The original slope 2 or 2/1 turns into -1/2 after flipping the fraction and the sign. Note the original slope and perpendicular slope multiply to -1. This is true for any pair of perpendicular lines where neither line is vertical.
The numbers are 3, 7, and 11.
The answer is ...
R = 5
8(5) = 40
I believe the answer is 5.73
Because it can't be simplified.
There aren't like terms and there isn't fractions.