Review of Complements:
http://www.crctlessons.com/complement-of-a-set.html
Review of Intersections & Unions:
http://www.youtube.com/watch?v=Hek8Y3FlAm0
Answer's to the Unit 1 Practice Quiz:
2b) This number is an irrational number because 150 is not a perfect square, therefore when it is simplified it is a non-repeating, non-terminating decimal.
2c) This number is rational since it can be written as a fraction. Rational numbers are either terminating or repeating decimals. (Can be written as 7/9)
2d) This number is rational since it can be written in "a" divided by "b" form. -33/7
3) Given Expression
Distributive Property
Commutative Property of Addition
Associative Property of Addition
Additive Inverse
Additive Identity
4a) -4.6
4b) pi
4c) impossible
4d) -7
5a) The set of natural numbers is closed under addition because whenever you add two natural numbers together the sum will always be another natural number. (EX: 6 + 56 = 62)
5b) The set of natural numbers is NOT closed under addition because when you divide 6 by 12 (both of which are natural numbers) the quotient is 0.5 which is not a natural number.
6b) E' = { 1, 3, 5, 7, 9}
E u P = {2, 3, 4, 5, 6, 7, 8, 10}
F n P = { 2, 3, 5}
(E u P) n F = {2, 3, 5, 8}
(E u F)' = {7, 9}
Good Luck Studying! Feel free to post questions if you have them!
