Algebra Chap. 2
algebra vocab from chap. 2
Terms
undefined, object
copy deck
- Multiplication Counting Principle
- If one choice can be made in m ways and a 2nd choice can be made in n ways, then there are mn ways of making the choices in order.
- sense of an inequality
- lesson 2-8
- Multiplying Fractions Property
- a/b times c/d = ac/bd ( b and d are not 0)
- direction of an inequality sign
- lesson 2-8
- Permutation Theorem
- There are n! possible permutations of n different objects when each object is used exactly once.
- Multiplication Property of -1
- a times -1 = -a
- Properties of Multiplication of Positive and Negative Numbers
- lesson 2-5
- IF-THEN
- A BASIC command that tells the computer to perform the THEN part only if the IF part is true.
- reciprocal rates
- 2 rates in which the quantities are compared in reverse order.
- Multiplication Property of Inequality
- If x < y and a is positive, then ax < ay. If x < y and a is negative, then ax > ay
- Multiplicative Identity Property of 1
- a times 1 = 1 times a = a
- n factorial, n!
- n! = 1 times 2 times . . . times (n-1) times n
- Associative Property of Multiplication
- (ab)c = a(bc)
- Property of Reciprocals
- For any nonzero real number a, a times 1/a = 1/a times a = 1
- Rules for Multiplying positive and negative numbers
- lesson 2-5
- Rate Factor Model for Multiplication
- When a rate is multiplied by another quantity, the unit of the product is the product o the units. Units are multiplied as though they were fractions. The product has meaning when the units have meaning.
- opposites
- The opposite of any real number x is -x
- volume
- The space contained by a 3-D figure. product of dimensions
- reciprocals, multiplicative inverses
- reciprocal of n = 1/n
- rectangular solid, box
- 3-D figure with 6 rectangular faces
- Reciprocal of a Fraction Property
- If a and b do not = 0, then the reciprocal of a/b = b/a
- algebraic fractions
- a fraction with a variable in its numerator or denominator
- tree diagram
- A tree-like way of organizing the possibilities of choices in a situation.
- Equal Fractions Property
- If k does not = 0, and b does not = 0, then a/b = ak/bk
- Multiplication Property of Equality
- if a = b, then ca = cb
- Multiplication Property of Zero
- a times 0 = 0
- permutation
- An arrangement of letters, names, or objects
- discrete set
- a set of objects that can be counted
- Commutative Property of Multiplication
- ab = ba
- Area Model for Multiplication
- Area of a rectangle = l times w
- rectangular array, dimension
- 2-D display of numbers or symbols arranged in rows and columns