C:
6*2 = 2.5c
c = 4.8
b:
Cannot be solved until the measure of one other angle in the X is added.
Answer:
You can tell because, as x increases/decreases, y increases/decreases at the same rate EACH TIME. This way, no matter how many times the proportions increase OR decrease, the ratio between x and y always stays the same.
anything multiplied by one is itself, anything multiplied by zero is zero
It would be 4.4mm/.5 mm x 4 cm = 35.2 cm