The Sun and the Moon both have the same angular size (or diameter) when viewed from Earth. If the Sun is 150,000,000 km away from Earth and the Moon is 384,000 km away, then how many times larger is the Sun's actual diameter than the Moon's?

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241. a) 0 b) 1 c) 2 d) 1 2

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?