If two of the four expressions x + y, x + 5y, x - y, and 5x - y are chosen at random, what is the probability that their product will be of the form of x^2 - (by) ^2, where b is an integer?

A) 1/2

B) 1/3

C) 1/4

D) 1/5

E) 1/6

What is the word form for 93,472,810

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What is 3/10 equivalent to

In a geometry class, the students were asked to prove the theory below by contradiction. Theorem: A triangle has at the most one obtuse angle. Heather begins the proof with an assumption. Which statement will she most likely use as an assumption. 1.