ACT Math Test Prep Course Exam Review Made Easy

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ACT Math Test Preparation Study Guide Multiple Choice Practice Questions - Algebra, Geometry, and Trigonometry

16 students enrolled

What Will I Learn?

- Students will learn how to solve common math concepts tested on the ACT exam.

Requirements

- Students should have a basic understanding of Algebra, Geometry, and Trigonometry.

Description

This ACT Math test prep review course contains 190 multiple choice practice problems with the step by step solutions. I recommend that you pause the video and work through each problem first before viewing the solution.

Here is a list of topics covered in this course:

1. Basic Algebra Review

2. Evaluating Composite Functions

3. Graphing Linear and Quadratic Equations

4. Factoring Trinomials, Perfect Square Binomials, Sum of Perfect Cubes, and GCF

5. Simplifying Rational Expressions

6. Matrix Multiplication and Finding The Determinant

7. Using The Quadratic Formula to Solve Quadratic Equations

8. Solving Functions With Multiple Variables

9. Finding The Slope Between Two Points

10. Writing Linear Equations of Parallel and Perpendicular Lines

11. Scientific Notation - Multiplication and Division

12. Properties of Exponents - Power Rule, Product Rule, and Quotient Rule

13. Solving Algebra Word Problems

14. Converting Sentences Into Equations

15. Distance Rate Time Word Problems

16. Rental Car Company Word Problems

17. Basic Math Review - Numerical Calculations

18. Ratios, Rates, and Proportions

19. Simplifying Complex Fractions - Multiplying and Dividing Fractions

20. Adding and Subtracting Mixed Numbers / Fractions

21. Nickels, Quarters, and Dimes Word Problem

22. Solving System of Equations With 2 and 3 Variables

23. Solving Linear Inequalities and Graphing The Solution on a Number Line

24. Consecutive Even and Odd Integer Word Problems

25. Problems With Square Roots, Cube Root, and Simplifying Radical Expressions

26. Simplifying Logarithmic Expressions and Solving Logarithmic Equations

27. Solving Exponential Equations With Different Bases

28. Cross Multiplying With Two Fractions

29. Order of Operations - Addition, Subtraction, Multiplication and Division

30. Basic Mathematics - Percentages, Percent Change, and Percent Increase Decrease

31. Percentage Word Problems - Sales Tax, Discount, Original Selling Price, and Final Amount

32. Permutations and Combinations Word Problems - Combinatorics

33. Probability Word Problems - Red, Blue, Green and Yellow Marbles - Dependent and Independent Events

34. Fundamental Counting Principle

35. Arithmetic Sequence, Geometric Series, and Partial Sum

36. Conic Sections, Circles and Parabolas - Completing The Square To Write Equation In Standard Form

37. Linear Equations - Slope Intercept Form, Standard Form, and Point Slope Form

38. Midpoint Formula and Distance Formula

39. Geometry - Basic Review

40. Area and Perimeter of Rectangle, Square, and Triangle

41. Area and Circumference of a Circle - Radius vs Diameter

42. Finding The Area of the Shaded Region

43. Finding The Length of the Diagonal of a Square and Rectangle

44. Area and Diagonal Length of Rhombus

45. Volume and Surface of Sphere, Cube, Rectangular Prism and Other Shapes

46. Lateral Area, Surface Area, and Volume of Right Circular Cylinder and Cone

47. Arithmetic Mean vs Geometric Mean

48. Averages of test word problems

49. Solving Similar Triangles Using Proportions

50. Special Right Triangles and Pythagorean Theorem

51. 30 60 90 Triangle and 45 45 90 Triangle

52. Parallel lines and Transversal

53. Alternate Interior Angles, Alternate Exterior Angles, Corresponding Angles, Linear Pairs / Supplementary Angles, and Vertical Angles

54. The Sum of all Interior Angles in a Regular Polygon - Triangle, Quadrilateral, Pentagon, and Hexagon

55. Area of a Parallelogram, Oblique Triangle, and Isosceles Trapezoid

56. Area and Perimeter of an Irregular Figure

57. Area of Scalene Triangle Using Heron's Formula

58. Circles, Intersecting Chords, Arc, tangent secant theorem

59. Segment Addition Problems, Midpoint, Right Angles, and Other Geometry Topics

60. Trigonometry Course Review

61. Simplifying and Evaluating Trigonometric Expressions of Sine, Cosine, and Tangent

62. Verifying Trigonometric Identities

63.

Who is the target audience?

- Anyone who wishes to improve their score in the math section of the ACT exam.

Compare to Other ACT Prep Courses

Curriculum For This Course

191 Lectures

07:22:31
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Lesson Proper
191 Lectures
07:22:31

This course contains 190 multiple choice practice problems to help improve your score on the math section of the ACT exam. I recommend pausing each video and working out the problem first before unpausing it to view the solution. This will help to improve your math score in the long run.

Preview
00:20

This question test your ability to solve linear equations.

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01:44

This multiple choice question test your ability to solve quadratic equations by factoring. You can also solve it using the quadratic formula.

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01:43

This question focuses on evaluating simple algebraic functions.

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01:02

This question gives you the area of the square and asks you to find its perimeter.

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01:26

This question asks you to identify which linear equation corresponds to the graph provided.

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01:09

This video focuses on finding the area of a right triangle.

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02:23

This video focuses on finding the average test score given a list of scores.

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01:07

This question ask you to find the average of seven test scores given the average of the previous six tests plus the score of the seventh test.

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02:03

This question ask you to find the area of the shaded region when a triangle is inside of a circle.

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04:00

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06:51

This video question explains how to convert sentences into rational equations and shows you how to solve it.

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03:15

This video explains how to solve a system of equations with two variables using the elimination method.

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03:24

This video explains how to solve a word problem regarding the cost of apples and bananas using a system of equations with 2 variables.

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04:41

This video provides a basic introduction into the properties of exponents.

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03:30

This video question asks for the slope of a linear equation written in standard form.

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01:19

This video question covers square roots, integers, and inequalities.

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01:48

This video explains how to write an equation of a circle in standard form given the graph. It shows you how to identify the center and radius of the circle.

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03:24

This video explains how to use trigonometric identities to identify which expression in the multiple choice answers is equivalent to the trigonometric expression provided in the question.

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02:22

This video question provides a similar example to question 19 on verifying trigonometric identities.

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02:18

This video explains how to find the missing segment of a triangle.

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01:39

This video explains how to find the original selling price given the final price of the item and the sales tax.

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01:50

This video explains how to determine the original price of an item given the percent discount and final price.

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02:16

This video explains how to determine the amount of money a customer will receive after handing the clerk a certain amount of money and paying for any sales tax minus any percent discounts.

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03:21

This video explains how to calculate the height of a right circular cylinder given the radius and volume of the cylinder.

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01:15

This question asks you to determine the slope between two points given the x and y coordinates as fractions.

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02:55

If a person can eat 7 apples in 18 minutes, how many apples can he eat in 27 minutes?

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02:56

This video explains how to solve a simple distance rate time problems with by converting units.

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03:20

This video explains how to solve common word problems involving rates and proportions with simple unit conversion / dimensional analysis techniques.

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02:15

This video explains how to solve a unit conversion word problem with books and dollars.

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01:19

This video explains how to solve functions with two variables such as x and y.

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03:49

This video explains how to write the equation of a line that is perpendicular to another line and that passes through the given point.

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04:13

This video explains how to use the distance formula to find the missing x value.

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02:56

This video explains how to use the midpoint formula to find the missing y coordinate value.

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01:52

This video explains how to solve a consecutive integer problem. It discusses how to find the sum of the second and fourth integers given the sum of all four integers.

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02:10

This video explains how to solve age related word problems using a system of two equations and solving it by using the substitution method.

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01:23

This video explains how to solve inequalities and how to graph the solution on a number line. It discusses when you should use and open circle vs a closed circle.

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03:00

This video explains how to find the total number of seats in an auditorium / theater using arithmetic sequences.

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02:36

This video explains how to find the value of an algebraic expression given a quadrilateral and its four angles in terms of x.

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02:00

This video explains how to find the volume of a sphere given its surface area.

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02:01

This video explains how to find the missing angle using linear pairs and triangles.

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05:48

This video explains how to find the value of trigonometric expression using right triangles.

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01:39

This video explains how to find the area of an isosceles trapezoid given the length of the two bases and the slant height.

Preview
03:28

This video explains how to find the area of a parallelogram that is placed on an x,y coordinate system.

The Area of a Parallelogram

00:53

This video explains how to find the value of an algebraic expression using another linear equation.

Finding The Value of an Algebraic Expression Given an Equation

01:42

This video explains how to find the probability of selecting a green or yellow marble with replacement.

Finding The Probability of Selecting a Green or Yellow Marble

02:51

This video explains how to find the probability of selecting a red marble on the first try and then a green marble on the second try without replacement.

Probability Without Replacement

03:08

This video explains how to simplify logarithmic expressions using the product rule, quotient rule, and power rule.

Simplifying Logarithmic Expressions

03:52

This video explains how to solve geometry problems with circles and intersecting chords.

Geometry Problems With Circles and Chords

07:02

This video explains how to find the missing cost of an item given the price of other items, the amount paid in total, and the sales tax.

Numerical Calculations Word Problem

02:05

This video explains how to find the circumference of a circle given its equation in nonstandard form. You need to complete the square to write the equation of the circle in standard form to identify the radius of the circle which will then help you to calculate its circumference.

Finding The Circumference of a Circle Given Its Equation In Nonstandard Form

02:39

This video explains how to calculate the missing length using proportions given two similar triangles.

Similar Triangles and Proportions

04:32

This lesson explains how to simplify absolute value expressions.

Simplifying Absolute Value Expressions

00:35

This video explains how to simplify mathematical expressions written using scientific notation using basic operations such as multiplication and division.

Scientific Notation - Multiplication and Division

01:37

This video explains how to calculate the total cost of an internal phone call given a fixed fee and a variable cost per minute used.

The Cost of an International Phone Call

01:48

This video explains how to calculate the number of miles that a person can drive given a budget, the fixed fee, and the variable cost per mile.

Rental Car Company Word Problem - Cost and Mileage

01:43

This video explains how to find the third point on a line given two other points on the same line.

Finding The Third Point on a Line Given The Other Two Points

04:09

This video explains how to find the average of all nine numbers if given the average of the first four numbers and the average of the other five numbers.

Finding The Average of Nine Numbers Given The Averages of Four and Five Numbers

02:26

This video explains how to find the average of twelve numbers given the average of all twenty numbers and the average of the other eight numbers.

Finding The Average of Twelve Numbers Given Average of Twenty & Eight Numbers

01:44

This video explains how to solve linear equations with parentheses.

Solving Linear Equations With Parentheses

01:05

This video asks you to solve a math question that involves integers and division.

Integers and Division

01:17

This video explains how to solve a ratio word problem involving boys and girls using a system of equations with two variables and using the substitution method.

Ratio of Boys to Girls Word Problem

01:48

This question is similar to question 63.

Ratio Word Problem

02:00

This video explains how to solve a ratio based word problem involving nickels, dimes, and quarters.

Nickels, Dimes, and Quarters Word Problem

01:37

This video explains how to solve a word problem involving nickels, dimes, and quarters given the total value of all coins in the jar. This question involves setting up a system of equations with three variables and solving by using the substitution method.

Nickels, Dimes, and Quarters Total Value Word Problem

05:30

This video explains how to calculate the perimeter of a square given the length of its diagonal.

Find The Perimeter of a Square Given The Length of its Diagonal

02:30

This video explains how to solve a geometry based word problem involving segment addition and midpoints.

Segment Addition Word Problem

02:26

This video explains how to find the result of a number and it increases and then decreases by a certain percentage.

Percent Increase and Decrease Word Problem

01:23

This video explains how to calculate the final result after a number experiences two successive percent increases.

Percent Increase Word Problem

02:00

This video explains how to solve a word problem involving direct variation.

Direct Variation Word Problem

01:03

This video explains how to solve a word problem involving direct and inverse variation.

Direct and Inverse Variation Word Problem

02:26

This video explains how to solve a system of equations problem that contain absolute value expressions.

Systems of Equations With Absolute Value

01:52

This video explains how to solve for a variable in terms of the other two variables given two equations.

System of Two Equations With Three Variables

01:41

This video explains how to write linear equations of parallel lines.

Writing Linear Equations of Parallel Lines

02:20

This video explains how to calculate the total area of an irregular figure.

Area of Irregular Figure

01:50

This video explains how to solve logarithmic equations.

Solving Logarithmic Equations

02:29

This video explains how to solve an overtime pay word problem.

Overtime Pay Word Problem

01:49

This video explains how to solve a word problem based on salary information, federal income tax, social security tax, and medicare tax.

Salary and Income Tax Word Problem

03:18

This video explains how to find the area of a circle given the endpoints of its diameter. You may need to use the midpoint formula and the distance formula for this problem.

Find The Area of a Circle Given The Endpoints of its Diameter

02:27

This video explains how to solve an exponential equation that also involves a quadratic equation of exponents.

Properties of Exponents and Quadratic Equations

01:16

This video explains how to solve exponential equations.

Solving Exponential Equations

02:00

This video explains how to identify the correct quadratic equation from a graph.

Identifying Quadratic Equations

02:55

This video explains how to calculate the area of the region bounded by an absolute value equation.

Finding The Area of the Region Bounded By an Absolute Value Equation

03:10

This video explains how to find the y-coordinate of a point of intersection of two linear equations.

Finding The Y-Coordinate of the Point of Intersection

02:14

This video explains how to evaluate composite functions.

Evaluating Composite Functions

01:00

This video explains how to evaluate piecewise functions.

Evaluating Piecewise Functions

02:09

This video explains how to determine the sum of two angles in a triangle when all angles in a triangle are represented by an algebraic expression in terms of the variable x.

Sum of Two Angles In a Triangle

04:19

This video focuses on functions and equations.

Functions and Equations

02:31

This video explains how to solve geometry problems with triangles and vertical angles.

Vertical Angles and Triangles

02:34

This video explains how to find the total number of coins in a jar after 3 years if a person adds a fixed number of coins to the jar every day.

Arithmetic Sequence - Coins in a Jar

01:59

This video explains how to find the sum of a geometric sequence.

Sum of a Geometric Sequence

02:06

This video explains how to simplify expressions with complex imaginary numbers.

Complex Imaginary Numbers

01:41

This video explains how to solve algebraic expressions with multiple variables.

Solving Algebraic Expressions With Multiple Variables

01:56

This video explains how to find the internal angle of a triangle that is inside of a circle.

Central Angles, Triangles, and Circles

01:14

This video explains how to find the possible length of the third side of a triangle.

Possible Length of Third Side of a Triangle

00:56

This video explains how to find the distance between the x and y intercept.

Finding The Distance Between X and Y Intercept

02:02

This video explains how to find the surface area of a cube given its volume.

Volume and Surface Area of a Cube

01:27

This video discusses how to find the value of an algebraic expression by first solving a system of equations.

System of Equations Math Problem

02:07

This video explains how to find the missing length of a triangle by breaking it up into similar triangles and solving it using proportions.

Similar Triangles

02:12

The length of a rectangle is five less than than twice its width. If the area of the rectangle is 322, how long is the width?

Finding The Width of a Rectangle Given Its Area

03:40

A bag contains 800 marbles. If the probability of selecting a red marble is 0.24, how many marbles are not red?

Probability

01:24

Fundamental Counting Principle

02:32

How many combinations can be made with 9 appetizers, 7 entree's and 6 deserts?

Another Example With Fundamental Counting Principle

00:40

In how many different ways can seven books be arranged on a shelf?

Permutations

01:39

How many different permutations can be produced from 4 winners in a race of 9 drivers?

Permutations

06:04

In how many ways can you arrange 3 pictures out of a total of 8 pictures?

Permutations

00:59

In how many ways can 3 positions be filled from a group of 10 people.

Combinations

02:22

This video explains how to solve a problems involving combinatorics consisting of two groups of individuals.

Multiple Combinations

02:54

This video focuses on the pythagorean theorem principle to determine if 3 sides correspond to a right triangle.

Pythagorean Theorem

02:35

This video explains how to find the area of a quadrilateral.

Area of an Irregular Four Sided Figure

01:33

This video explains how to find the area of a rhombus.

Area of a Rhombus

02:13

This video question focuses on chords, midpoints, circles, and right triangles.

Chords, Circles, and Triangles

00:57

This video focuses on the surface area and volume of a cylinder.

Surface Area and Volume of a Cylinder

02:29

This video explains how to find the lateral area of a cone using its volume.

Lateral Area and Volume of a Cone

02:38

This video question is another geometry problem with lines and triangles.

Geometry Problem With Lines and Triangles

01:41

This video explains how to calculate the perimeter of a right triangle given its area.

Area and Perimeter of a Triangle

01:38

This video explains how to find a side length of a triangle using special right triangle tricks.

Right Triangle Geometry

02:36

This video discusses alternate interior angles and alternate exterior angles that are formed when two parallel lines are crossed by a transversal. It also talks corresponding angles, linear pairs / supplementary angles, and vertical angles.

Alternate Interior and Exterior Angles

03:11

This video focuses on linear pairs and vertical angles.

Linear Pairs and Vertical Angles

02:48

This video asks you to find the difference of two numbers given the average / arithmetic mean and geometric mean.

Average and Geometric Mean

07:26

This video explains how to find the missing side length of a special right triangle using the geometric mean formula.

Right Triangle and Geometric Mean

03:31

This video explains how to find the area of an equilateral triangle.

Area of an Equilateral Triangle

05:41

This video explains how to find the area of the shaded region when a circle is inside another circle.

Find The Area of the Shaded Region

01:48

This video explains how to find the area of the shaded region when a semicircle is inside of a rectangle.

Area of Shaded Region

01:56

This video explains how to find the diagonal length of a rectangle given its area and perimeter.

Finding The Diagonal Length of a Rectangle Given Its Area and Perimeter

03:38

This video explains how to find the perimeter of a rhombus given the length of its two diagonals.

Find The Perimeter of a Rhombus Given The Length of its two Diagonals

01:49

This video explains how to find the area of a special right triangle.

Area of Special Right Triangle

01:25

This video explains how to find the area of the shaded region when a triangle is partially inside a circle.

Area of Shaded Region

04:31

This video is a geometry problem using the tangent square exterior secant theorem of circles.

Circle, Tangent, Secant, and Exterior Problem

03:05

This video focuses on percentages and numerical calculations.

Percentages and Numerical Calculations

01:23

This video focuses on percentages, variables, and equations.

Percentages, Variables, and Equations

03:54

This video focuses on percentages and variables.

Percentages and Variables

01:19

This video explains how to simplify rational expressions.

Simplifying Rational Expressions

01:05

This video explains how to multiply a binomial by a trinomial.

Multiplying a Binomial By a Trinomial

01:09

This video explains how to multiply and dividing rational expressions and how to simplify the result by factoring polynomials and by canceling common terms. This tutorial covers factoring differences of perfect squares, sum of perfect cubes, trinomials, and removing the GCF - greatest common factor.

Multiplying and Dividing Rational Expressions

02:27

This video explains how to add two rational expressions and how to simplify the result.

Adding Rational Expressions

01:46

This video explains how to solve quadratic equations that contain absolute value expressions.

Solving Absolute Value Quadratic Equations

01:28

This video explains how to solve a word problem that involves the sum of consecutive even integers.

Sum of Consecutive Even Integers Word Problem

03:07

This video explains how to solve a basic trigonometric equation.

Solving Trigonometric Equations

02:32

This video explains how to find the value of sine from an ordered pair.

Finding The Value of Sine From an Ordered Pair

01:59

This video is about basic word problems, numerical calculations and evaluating algebraic expressions.

Numerical Calculations

02:48

This video explains how to solve a basic algebra word problem that involves the cost of a monthly gym membership.

Gym Membership Problem

01:35

This video explains how to find the least common multiple of three numbers.

Least Common Multiple

03:29

This video explains how to determine the number of different ways to arrange the letters in the word MANHATTAN.

How Many Different Ways Can You Arrange The Letters MANHATTAN?

02:04

This video explains how to solve a word problem involving the cost of putting up a fence.

The Cost of Fencing

01:35

This video explains how to solve exponential equations with different bases.

Solving Exponential Equations With Different Bases

01:10

This video explains how to solve a distance word problem given mileage values in the form of mixed numbers or mixed fractions.

Distance, Mileage, and Mixed Fractions

02:40

This video explains how to identify the amplitude and period of a sine graph in order to determine the sum of those two values.

Amplitude and Period of a Sine Graph

01:02

This video explains how to solve a word problem regarding the cost of hiring a mobile mechanic which includes labor and travel costs.

Mobile Mechanic Word Problem

01:45

This video explains how to find the determinant of a 2x2 matrix.

Determinant of a 2x2 Matrix

00:59

This video explains how to multiply two matrices together.

Matrix Multiplication

01:51

This video explains how to perform addition and subtraction of vectors presented in component form.

Addition and Subtraction of Vectors In Component Form

01:25

This video explains how to perform mathematical operations such as addition and subtraction between two vectors which are presented on a graph.

Vector Addition and Graphs

02:47

This video explains how to evaluate algebraic functions with variables.

Evaluating Algebraic Functions With Variables

01:41

This video explains how to convert the temperature from fahrenheit to celsius units.

Fahrenheit to Celsius

01:21

This video explains how to solve a problem with distance, velocity, and acceleration using the formula provided.

Distance, Velocity, and Acceleration

01:52

This video explains how to identify the quadratic equation given its two solutions.

Writing Quadratic Equations Given Two Solutions

01:38

This video explains how to factor the sum of perfect square binomials.

Factoring Perfect Square Binomials

02:00

This video explains how to solve a common geometry segment addition problem.

Segment Addition Geometry Problem

01:18

This video explains how to solve a math problem involving averages and variables.

Averages and Variable

01:38

This question tests your ability to determine the net change of the value of a variable when one of its components increases while another component decreases.

Increase Decrease Variable Word Problem

01:56

This video explains how to solve a 2-person combination word problem.

2-Person Combination Problem

01:40

This video explains how to solve a common distance rate time word problem.

Distance Rate Time Word Problem

01:35

This video explains how to solve a distance rate time problem using unit conversion.

Distance Rate Time Problem With Unit Conversion

01:42

This video discusses the formula that calculates the centripetal force acting on an object moving in a circle.

Centripetal Force Formula

02:58

This video explains how to solve a triangle using the law of sines formula.

Law of Sines

02:00

This video explains how to find the area of a right triangle using A = 1/2bh, A = 1/2absinC, and Heron's formula.

Finding The Area of a Triangle Using Three Different Formulas

04:22

This video explains how to find the perimeter of the larger similar triangle given the perimeter ratio of the two triangles.

Similar Triangles and Perimeter Ratio

02:37

This video explains how to find the area and perimeter of an equilateral triangle on top of a square.

Finding The Area and Perimeter of an Equilateral Triangle on top of a Square

01:48

This video explains how to find the median from a frequency table.

Finding The Median From a Frequency Table

01:51

This video explains how to find the mode from a frequency table.

Finding The Mode From a Frequency Table

00:39

This video explains how to find the mean from a frequency table.

Finding The Mean From a Frequency Table

02:40

This video asks some basic questions about a pie chart.

Pie Chart Problem

00:49

This video asks you to find some information regarding the expenditures of a company using the pie chart problem.

Pie Chart Problem 2

01:11

This video explains how to find the ratio between the expenditures of the research department and the purchasing department.

Pie Chart Problem 3

01:00

This is a continuation of the last problem.

Pie Chart Problem 4

01:23

This question asks for the sales generated by a company in a certain year using a bar graph.

Bar Graph Problem

00:35

This video asks for the year in which the company generated a certain amount of sales.

Bar Graph Problem 2

00:17

This video explains how to calculate the percent change in sales between two different years.

Bar Graph Problem 3

01:14

This video explains how to find the length of the hypotenuse of a composite triangle.

Finding The Length of the Hypotenuse of a Composite Triangle

01:48

This video explains how to find the volume and surface area of a rectangular prism.

Volume and Surface Area of a Rectangular Prism

03:11

This video explains how to solve a geometry problem with multiple isosceles triangles.

Geometry Problem With Multiple isosceles Triangles

02:15

This video explains how to find the difference of two angles in an isosceles trapezoid.

Finding The Difference of Two Angles in an Isosceles Trapezoid

02:06

This video explains how to find the percent of the area of a rectangle that lies in quadrant 1.

Finding The Percent of the Area of a Rectangle That Lies in Quadrant 1

02:35

This video explains how to find the surface area of the larger cube.

Finding The Surface Area of the Larger Cube

02:07

This video explains how to solve an age related word problem using a system of three equations and solving using the substitution method.

Age Related Word Problem With System of Equations

02:04

This video explains how to solve geometry problems with intersecting chords and arcs within a circle.

Circles, Chords, and Arcs

02:34

This video explains how to determine the amount contributed by each individual towards the purchase of a flat screen tv.

3 People Buying a Flat Screen TV

02:02

This video explains how to solve a geometry problem with triangles and lines.

Geometry Problem With Triangles and Lines

03:26

About the Instructor