Answer:
Step-by-step explanation:
Converting the equation to solve for a really just means getting a alone on one side of the equation.
To get a alone on the left, we can subtract c from both sides:
(Since c - c = 0, c will disappear from the left side.)
100 degrees
They have to add up to 180 because they're on a straight line together.
180 - 80 = 100 degrees
it's related by product of 5/3 and directly proportional
all 3 are correct.
I
II
III
you're welcome