Answer:definition of midpoint, angle BCA is congruent to angle DCA
Try to use long division! To calculate a fraction as a decimal, you can act like the slash is a division symbol.
So, to calculate 1/6 as a decimal, divide 1 by 6 on a sheet of paper (or a calculator) and you’ll find out what it is.
Inputs are the first number output is the second. So youre outputs are 2, -1, -1, and 3. so i would say b