Here is the solution to this even numbered problem:

# Search Results for: ch1.3

## Algebra II with Trig Ch1.3 #73

How do we work Algebra II with Trig Chapter 1.3 #73?

**Solution**

a) Area after purple section cut out

A = (20 times 20) – 4(x^2) = -4x^2 + 400 = -4(x^2 – 100) = -4(x + 10)(x – 10)

b) V = Area of bottom times height = (20-2x)(20-2x) x = (400-80x+4x^2)x = 4x^3 – 80x^2 + 400x = 4x(x^2 – 20x + 100)

## Geometry Ch1.3 #23

**Question from Stacy: **

Chapter 1, Lesson 3, pg. 23, Set III, How to get an equilateral triangle by rearranging the polygons you cut out from the figure. (Number 5 in this set).

**Answer from Cassidy Cash:**

Shown on the left is the original shape as shown in the book,

but the four polygons are labeled 1, 2, 3, and 4.

Then on the right is shown the equilateral triangle you can make with those same polygons

## Support

## Course Resources

**Algebra**

- Readiness Exams / Prealgebra Options
- Algebra Course Description for Transcript
- Algebra 1 vs College Algebra?
- Model Rocket Activity
- Textbook and Solution Manual Errors

**Geometry**

- Geometry Course Description for Transcript
- Do I take Algebra 2 with Trig before Geometry?
- Proofs in Jacobs Geometry
- Grading Proofs
- Using Jacobs 2nd Edition with videos
- Textbook and Solution Manual Errors
- Geometry note on Missing Chapters
- Chapter 13 Videos
- Chapter 16 Videos

**Algebra 2 with Trig**

- Algebra 2 with Trig Course Description for Transcript
- Is my student ready for Algebra 2 with Trig?
- Do I take Algebra 2 with Trig before Geometry?
- How is Alg 2 with Trig different from Precalculus?
- What course do I take after Saxon Algebra 1 and 2?
- Teacher’s Guide (syllabus with homework problems and tests)
- Solutions to Selected Problems (This has some of the even-numbered solutions)
- Know Textbook and Solution Manual Errors

**Calculus**

- Are you ready for calculus?
- Know Textbook and Solution Manual Errors

**General Questions**

- The Math Problem – Why Homeschoolers Struggle in High School Math
- What is CLEP testing
- Do you recommend non-college bound students take Algebra I, Algebra II, and Geometry?
- What maths should I take and in what order for college prep?
- Online calculators

## Can’t Find What You Need?

Here is where you would ask about

- how to work a problem,
- a possible error in the textbook or teacher’s guides
- how to implement the math in your situation (questions moms ask!)

### First, try searching

Many questions have already been answered. To find a solution, just search the SEARCH bar to the right by typing the course name and the chapter.

For instance, to find and help with geometry chapter 1.3 you might search any of the following:

or click on the particular geometry link on the right-hand side of this page (under SEARCH).

**If you cannot find it, just Ask.**

You can ask a question in a few ways. **R****emember to give us the COURSE NAME and the problem NUMBER!**