How many degree black belts in tae kwon do are there?

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.