# ACT72f Math Answer Explanations

### 2019 June(72F) Math Question 1

Algebraic & Function Expressions

- Solve Algebraic Expressions

### 2019 June(72F) Math Question 2

Word Problems

- Cost

### 2019 June(72F) Math Question 3

Word Problems

- 1 Variable Equations

### 2019 June(72F) Math Question 4

Exponents, Radicals, & Scientific Notation

- Exponent Expressions

### 2019 June(72F) Math Question 5

Perimeter, Area, Volume

- Other Shapes

### 2019 June(72F) Math Question 6

Angles

- Parallel Lines

### 2019 June(72F) Math Question 7

Ratios, Proportions, Percentages, Fractions

- LCM, GCF, Prime Numbers

### 2019 June(72F) Math Question 8

Quadratic Equations

- Factoring

### 2019 June(72F) Math Question 9

Ratios, Proportions, Percentages, Fractions

- Proportions & Ratios

### 2019 June(72F) Math Question 10

Sequences and Patterns

- General Sequences

### 2019 June(72F) Math Question 11

Equation of a Line

- Distance & Midpoint

### 2019 June(72F) Math Question 12

Perimeter, Area, Volume

- Triangles, Squares, Rectangles, Circles

### 2019 June(72F) Math Question 13

Algebraic & Function Expressions

- Simplify Algebraic Expressions

### 2019 June(72F) Math Question 14

Logarithms

- Logarithm Expressions

### 2019 June(72F) Math Question 15

Absolute Values

- Absolute Value Expressions

### 2019 June(72F) Math Question 16

Equation of a Line

- Equations that Describe a Line

### 2019 June(72F) Math Question 17

Algebraic & Function Expressions

- Solve Function Expressions

Angles

- Circles

### 2019 June(72F) Math Question 19

Statistics

- Mean, Median

### 2019 June(72F) Math Question 20

Ratios, Proportions, Percentages, Fractions

- Percents & Fractions

### 2019 June(72F) Math Question 21

Ratios, Proportions, Percentages, Fractions

- Percents & Fractions

### 2019 June(72F) Math Question 22

Angles

- Other Shapes

### 2019 June(72F) Math Question 23

Perimeter, Area, Volume

- Other Shapes

### 2019 June(72F) Math Question 24

Trigonometry

- Pythagorean Theorem & sin cos tan

### 2019 June(72F) Math Question 25

Algebraic & Function Expressions

- Systems of Equations

### 2019 June(72F) Math Question 26

Algebraic & Function Expressions

- Write Algebraic Expressions

### 2019 June(72F) Math Question 27

Sequences and Patterns

- General Sequences

### 2019 June(72F) Math Question 28

Quadratic Equations

- Factoring

Probability

- One Event

### 2019 June(72F) Math Question 30

Similar Triangles & Types of Triangles

- Triangle Types

### 2019 June(72F) Math Question 31

Trigonometry

- Pythagorean Theorem & sin cos tan

### 2019 June(72F) Math Question 32

Algebraic & Function Expressions

- Write Algebraic Expressions

### 2019 June(72F) Math Question 33

Perimeter, Area, Volume

- Triangles, Squares, Rectangles, Circles

### 2019 June(72F) Math Question 34

Trigonometry

- Pythagorean Theorem & sin cos tan

### 2019 June(72F) Math Question 35

Perimeter, Area, Volume

- Mixed Shapes

### 2019 June(72F) Math Question 36

Perimeter, Area, Volume

- Mixed Shapes

### 2019 June(72F) Math Question 37

Graphing Properties

- Reflection, Rotation, Symmetry, Translation

### 2019 June(72F) Math Question 38

Graphing Properties

- Interpret Graphs or Figures

### 2019 June(72F) Math Question 39

Exponents, Radicals, & Scientific Notation

- Radical Expressions

### 2019 June(72F) Math Question 40

Word Problems

- % Interest

### 2019 June(72F) Math Question 41

Ratios, Proportions, Percentages, Fractions

- Percents & Fractions

### 2019 June(72F) Math Question 42

Graphing Properties

- Interpret Graphs or Figures

### 2019 June(72F) Math Question 43

Algebraic & Function Expressions

- Solve Algebraic Expressions

### 2019 June(72F) Math Question 44

Algebraic & Function Expressions

- Systems of Equations

### 2019 June(72F) Math Question 45

Graphing Properties

- Reflection, Rotation, Symmetry, Translation

### 2019 June(72F) Math Question 46

Equation of a Line

- Distance & Midpoint

### 2019 June(72F) Math Question 47

Word Problems

- 1 Variable Equations

### 2019 June(72F) Math Question 48

Word Problems

- Temperature

### 2019 June(72F) Math Question 49

Graphing Properties

- Domain, Range, Asymptote, Undefined

### 2019 June(72F) Math Question 50

Ratios, Proportions, Percentages, Fractions

- Percents & Fractions

### 2019 June(72F) Math Question 51

Exponents, Radicals, & Scientific Notation

- Exponent Expressions

### 2019 June(72F) Math Question 52

Equation of a Line

- Equations that Describe a Line

### 2019 June(72F) Math Question 53

Trigonometry

- Advanced sin, cos, tan functions

### 2019 June(72F) Math Question 54

Graphing Properties

- Intersection of Lines

### 2019 June(72F) Math Question 55

Ratios, Proportions, Percentages, Fractions

- Percents & Fractions

### 2019 June(72F) Math Question 56

Graphing Properties

- Reflection, Rotation, Symmetry, Translation

### 2019 June(72F) Math Question 57

Matrices

- Multiplication

### 2019 June(72F) Math Question 58

Similar Triangles & Types of Triangles

- Similar Triangles

### 2019 June(72F) Math Question 59

Probability

- More than One Event

### 2019 June(72F) Math Question 60

Sequences and Patterns

- Logical Expressions