# Shared Flashcard Set

## Details

Unit One
Math 119 Study Flash Cards Competition
65
Mathematics
09/12/2010

Term
 What is a natural number?
Definition
 A natural number is the numbers 1, 2, 3, etc... it does not contain 0.
Term
 Give an example of a natural number?
Definition
 Example: 1,2,3,4,5,6,7,8,9,etc
Term
 What is not a natural number?
Definition
 Example: 0, 1/2, .33333
Term
 What is whole number?
Definition
 A whole number is any number that is 0,1,2,3,4,5,6,etc.
Term
 What is not a whole number?
Definition
 Example: 5/6 .777
Term
 What is an integer?
Definition
 Is any positive number, negative number, and 0... No fractions....
Term
 Is -9 an integer?
Definition
 Yes.
Term
 What is a rational number?
Definition
 is like an integer but it contains fractions that are repeating or that have a pattern or they stop.
Term
 Examples of rational numbers...
Definition
 9 -9 2/3 .333 .98989898
Term
 What is not a rational number?
Definition
 .93759624759 pie square root of 2
Term
 What is an irrational number?
Definition
 An irrational number are numbers that do not repeat or written as a fraction.
Term
 Examples of irrational numbers?
Definition
 pie .2875943875 square root of 3
Term
 What is the difference between inequalities and interval notations?
Definition
 Write each inequality using interval notation.                          a. x>4 ->inequality                                                     b. -1interval notation
Term
 Should the interval follow the number line? True/False
Definition
 True
Term
 Pie is irrational because it doesnt repeat or ever stop. True/False
Definition
 True
Term
 When is ( and ) used?
Definition
 With < and >
Term
 We use [ and ] with < and >.. True/False
Definition
 False
Term
 We use < and > but with the horizontal line under it with???
Definition
 [ and ]
Term
 The filled in bold dot on the inequality line means?
Definition
 That the interval notation has a less than or greater than and equal to sign
Term
 A open white dot means it is just < and >.. True/False
Definition
 True
Term
 -2
Definition
 x is greater than -2 and less than 5
Term
 What does -a mean?
Definition
 It means the opposite of "a"
Term
 If a=5 then -a is?
Definition
 -a=-5
Term
 Name three of the common properties...
Definition
 Communtative Associative Distributive   Properties
Term
 What is commutative property?
Definition
 Communtative property is when you change the order and it's okay.
Term
 Give an example of communtative property...
Definition
 ab=ba   3+5=5+3
Term
 Give an example of associative property and what is it?
Definition
 Associative property is when you move the ( ) and it's okay...   (ab)c=a(bc)
Term
 Distributive property is when you correctly distribute and if they equal out than it's okay... Example- 2(x+y)=2x+2y   True/False
Definition
 True
Term
 If a= -5 then what is -a=???
Definition
 -a=5
Term
 But remember -22 is??
Definition
 -4
Term
 When you susitute it never gets parenthesis? True/False
Definition
 False
Term
 x=-3   With x2 and -(x)2
Definition
 x2= (-3)2=9   but -(x)2=-(-3)2=-9
Term
 0 divided by anything is called?
Definition
 Undefined
Term
 Anything to the 0 is 1 True/False
Definition
 True 90=1
Term
 When multiplying fractions Dont multiply across   True/False
Definition
 False
Term
 What is a trick to remember when dividing fractions?
Definition
 Keep it Change it Flip it
Term
 When adding or subtracting fractions you must find a common numerator   True/False
Definition
 false-denominator
Term
 What is (-3ab)(4ab3)
Definition
 -12a2b-2   which becomes -12a2/b2
Term
 The odd root of a negative will be a negative? True/False
Definition
 True
Term
 The even root of a negative will be "no real" number?   True/False
Definition
 True
Term
 What is -32?
Definition
 -9
Term
 What is (-3)2?
Definition
 9
Term
 5/0 is ?
Definition
 UNDEFINED
Term
 What is a-3/2?
Definition
 1/square root of a3
Term
 what is x2/3?
Definition
 3 on the outside of square root of x2
Term
 What does profit equal to?
Definition
 Revenue-cost
Term
 x7/x4 is?
Definition
 x^3
Term
Definition
 No you will not because you need to cross it over the magic division bar
Term
 If you are dividing and you have the same base than you will _________ the exponents?
Definition
 SUBTRACT
Term
 If same base, you multiply the coeffients and _____ the exponents?
Definition
Term
 What is a times a =
Definition
 a1+a1=a2
Term
 Anything to the zero power is?
Definition
 1
Term
 3x+8x=
Definition
 11x2
Term
 What is the difference of square?
Definition
 u2-v2
Term
 a2+2ab+b2
Definition
 is called the perfect square trinomial
Term
 (x-2)(2x)+(x-2)(3) What is the common factor?
Definition
 (x-2)
Term
 What is e?
Definition
 irrational
Term
 What is 0?
Definition
 rational whole number integer
Term
 What is 1?
Definition
 rational integer natural   numbers
Term
 2x+12x-9 is a polynomial? true/false?
Definition
 true
Term
 3x^2+6x-9   What is the constant?
Definition
 -9
Term
 Name one easy way to find a domain?
Definition
 All polynomials are all real numbers
Term
 Name another way to find domains?
Definition
 if it has a denominator with an X then the bottom can not equal 0
Term
 What unit are we in? When is the test?
Definition
 Unit 1 9/13/10
Term
 Explain outside and under?
Definition
 What the thing asked for to factor out put it infront of the ( ) and also put it under each part of the problem
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