Answer:
Step-by-step explanation:
Angles EBC and EDC are the same. and straight lines equal 180
so now to solve for x

When multiplying numbers with exponents, add the exponents.
So the answer is 2^-16
Nine fifths is equalized to 1.8
So-called simplifying, really means, "rationalizing the denominator", which is another way of saying, "getting rid of that pesky radical in the bottom"