# ACT69a Math Answer Explanations

Probability

- One Event

### 2010 December(69A) Math Question 2

Ratios, Proportions, Percentages, Fractions

- Proportions & Ratios

### 2010 December(69A) Math Question 3

Graphing Properties

- Reflection, Rotation, Symmetry, Translation

### 2010 December(69A) Math Question 4

Algebraic & Function Expressions

- Solve Algebraic Expressions

### 2010 December(69A) Math Question 5

Ratios, Proportions, Percentages, Fractions

- LCM, GCF, Prime Numbers

### 2010 December(69A) Math Question 6

Similar Triangles & Types of Triangles

- Triangle Types

### 2010 December(69A) Math Question 7

Algebraic & Function Expressions

- Solve Algebraic Expressions

### 2010 December(69A) Math Question 8

Exponents, Radicals, & Scientific Notation

- Exponent Expressions

### 2010 December(69A) Math Question 9

Ratios, Proportions, Percentages, Fractions

- Percents & Fractions

### 2010 December(69A) Math Question 10

Statistics

- Mean, Median

### 2010 December(69A) Math Question 11

Word Problems

- Cost

### 2010 December(69A) Math Question 12

Word Problems

- Fixed Cost + Variable Cost

### 2010 December(69A) Math Question 13

Absolute Values

- Absolute Value Expressions

### 2010 December(69A) Math Question 14

Exponents, Radicals, & Scientific Notation

- Scientific Notation

### 2010 December(69A) Math Question 15

Algebraic & Function Expressions

- Solve Algebraic Expressions

### 2010 December(69A) Math Question 16

Exponents, Radicals, & Scientific Notation

- Exponent Expressions

- FOIL

### 2010 December(69A) Math Question 18

Angles

- Collinear Points & Triangles

### 2010 December(69A) Math Question 19

Algebraic & Function Expressions

- Systems of Equations

### 2010 December(69A) Math Question 20

Word Problems

- Fixed Cost + Variable Cost

- FOIL

### 2010 December(69A) Math Question 22

Word Problems

- 2 Variable Addition

### 2010 December(69A) Math Question 23

Number Types & Properties

- Order of Values

### 2010 December(69A) Math Question 24

Algebraic & Function Expressions

- Write Function Expressions

### 2010 December(69A) Math Question 25

Algebraic & Function Expressions

- Solve Algebraic Expressions

### 2010 December(69A) Math Question 26

Graphing Properties

- Interpret Graphs or Figures

### 2010 December(69A) Math Question 27

Exponents, Radicals, & Scientific Notation

- Exponent Expressions

### 2010 December(69A) Math Question 28

Similar Triangles & Types of Triangles

- Similar Triangles

### 2010 December(69A) Math Question 29

Word Problems

- 2 Variable Addition

Conics

- Parabola

### 2010 December(69A) Math Question 31

Equation of a Line

- Distance & Midpoint

### 2010 December(69A) Math Question 32

Perimeter, Area, Volume

- Triangles, Squares, Rectangles, Circles

### 2010 December(69A) Math Question 33

Trigonometry

- Pythagorean Theorem & sin cos tan

### 2010 December(69A) Math Question 34

Trigonometry

- Pythagorean Theorem & sin cos tan

### 2010 December(69A) Math Question 35

Equation of a Line

- Distance & Midpoint

### 2010 December(69A) Math Question 36

Perimeter, Area, Volume

- Mixed Shapes

### 2010 December(69A) Math Question 37

Sequences and Patterns

- Arithmetic Sequences

### 2010 December(69A) Math Question 38

Algebraic & Function Expressions

- Simplify Algebraic Expressions

### 2010 December(69A) Math Question 39

Perimeter, Area, Volume

- Other Shapes

### 2010 December(69A) Math Question 40

Number Types & Properties

- Order of Values

### 2010 December(69A) Math Question 41

Equation of a Line

- Distance & Midpoint

### 2010 December(69A) Math Question 42

Perimeter, Area, Volume

- Other Shapes

### 2010 December(69A) Math Question 43

Probability

- Combinations

### 2010 December(69A) Math Question 44

Trigonometry

- Pythagorean Theorem & sin cos tan

### 2010 December(69A) Math Question 45

Number Types & Properties

- Order of Values

Probability

- One Event

### 2010 December(69A) Math Question 47

Perimeter, Area, Volume

- Mixed Shapes

### 2010 December(69A) Math Question 48

Algebraic & Function Expressions

- Systems of Equations

### 2010 December(69A) Math Question 49

Perimeter, Area, Volume

- Other Shapes

### 2010 December(69A) Math Question 50

Trigonometry

- Pythagorean Theorem & sin cos tan

### 2010 December(69A) Math Question 51

Equation of a Line

- Equations that Describe a Line

- Factoring

### 2010 December(69A) Math Question 53

Angles

- Parallel Lines

### 2010 December(69A) Math Question 54

Trigonometry

- Pythagorean Theorem & sin cos tan

### 2010 December(69A) Math Question 55

Graphing Properties

- Create Graphs or Figures

### 2010 December(69A) Math Question 56

Probability

- Combinations

### 2010 December(69A) Math Question 57

Absolute Values

- Absolute Value Expressions

### 2010 December(69A) Math Question 58

Trigonometry

- Pythagorean Theorem & sin cos tan

### 2010 December(69A) Math Question 59

Graphing Properties

- Reflection, Rotation, Symmetry, Translation

### 2010 December(69A) Math Question 60

Exponents, Radicals, & Scientific Notation