## Friday, February 29, 2008

The grades to the right are the most current grades after Chapter 9 Test #1. These are the grades that will be on your 5-week progress report. Of course, you can change it by doing extra credit but it can only be changed on Monday, after that the scores are final. Have a good weekend.

## Thursday, February 28, 2008

### Thursday Review Square Roots

Th homework for today is Page 14, #1-21. If you feel like doing more you can do the rest for extra credit (4 points). Make sure you do it correctly, because if it is wrong, you will not get any credit.

The test tomorrow will cover everything we have done the last few days. If you want a sneak peak at it, you can go to this link here. Its not all the questions, but it gives you a good idea of how it goes.

## Wednesday, February 27, 2008

### Wednesday and Estimating

The homework today is:
Page 451
#5-12 and #41-51

The first section you are telling me what the square root is between. Problem 8 √5 is between what two numbers? It is between 2 and 3.

The second section you solve just like problems from our warm-ups. Remember that there are two answers, a positive AND a negative one.

## Tuesday, February 26, 2008

### Green Flash

Some people were wondering about this, so I thought I should put it up. The green flash is what you see the sun make just as it sets over the horizon. Many people say it is fake, but that is because they have not seen it. I have seen it a few times, and here is a sequence of picture that show a really good one. It was taken over the mountains in France from an observatory. You can see the flame pass into the clouds just before the sun sets.

### Square Roots

Starting square roots, remember that square roots are just the opposite of squaring a number

***Please note: In the web page, the square too sign looks like √, and is missing the top line across it.

42 = 16 and √16 = 4

They are the reverse of each other.

36 = 6

49 = 7

Even some difficult ones are easy. Just look at the first numbers to find the small square root, then add some zeros.

1600 looks like √16 with some zeros after it.

We can do the same thing with the answer.

The answer to √16 is 4, and the answer to √1600 is just 40. Just add the zero.

## Friday, February 22, 2008

### Friday Quiz

For the quiz today, the average in all the classes was 7 right out of 11. Most people had trouble when flipping the triangles around.

Check your grades now, as these are the most current grades with all the extra credit included. Some of you went up a considerable amount. There are still 2 weeks left before grades are due, so keep up the effort.

## Wednesday, February 20, 2008

### Angle homework

For those with D-35 for homework

Middle row: PQR = 113. PQT = 67

XZY = 42 Y = 59

For those with D-36 for homework:
Letter T: m8 = 78
Letter W: m11 = 105

## Saturday, February 16, 2008

### New things for the Web

First off, I apologize for not putting things online for last week. I was stuck trying to get the grades online in a way that was fair for all.

If you look at the side bar (on the right) you will see two new sections. One for the grades and one for extra credit.

Grades: To find your grade, just click on the appropriate period. A PDF will open and you have to find your grade using your number. If you forgot your number, you have to go see Mr. Brzenski to get it.

Extra Credit: Under extra credit are five different worksheets you can do for extra credit. Each worksheet is worth 5 points. Open the PDF file and print it out on the school printer or your own printer. Make sure you put your name and the title "Extra Credit" at the top of the page. You can turn these in at any time.

## Tuesday, February 12, 2008

### Tuesday and the Book work

Homework today is page 387 #6-14.

Question 6: When it asks you to write four other names for "CF", it just wants to know what other combinations fo points are on the line with "CF". The easiest way to rewrite it is to put it backwards "FC". There are some other points on the line you could use to describe the line.

Question 14: "EB = EJ". The wavy equal sign is how you write = in geometry. Just assume it means "equal". The picture tells you how long "EB" is, its the number in blue. And if "EB = EJ", then you should know how big "EJ" is.

Tomorrow we will learn about straight angles and supplementary and complementary angles.

## Thursday, February 7, 2008

### Thursdays Work

First, for those of you who missed yesterdays stuff. If you want to make up for it, write the following number in Wednesdays box on your homework tracking sheet:

"112358132134"

For the homework tonight, you are supposed to finish the word problems on the back of the worksheet we were doing in class. There are some tough questions near the bottom of the page, as well as number 3.

For #3 Gear Ratio:
The question gives you the ratio of gear A to gear B as 5/12. Now you need a third number. Look at the picture to the right and you will see a picture of gear A. How many teeth does it have? Use that number as your third number and fill it into the proportion you make up.

For #9 Solar System Model:
The question gives you three number but three different sentences. It gives you the Sun, the Earth, and the size of a basketball. The correct way to set up the proportion is:
24/870000 = x/8000
Your answer will be a very small number. Which makes sense. The sun is huge! If you shrunk it to the size of the basketball, the earth would shrink way down to the size of a speck.

For #10 Painting problem:
You are given one number, 1.5 and two pictures of walls. First, figure out how big each wall is (base x height). Then, set up a proportion so you know how much paint covers the small wall. Then, solve the proportion to find out how much is needed for the big wall.

1.5/wall #1 = x/wall #2

## Wednesday, February 6, 2008

### HOMEWORK FOR WEDNESDAY

For tonights homework, please write the following number in the box for WEDNESDAYS assignment on your homework tracking sheet

"e = 2.71828183"

Thats it. Bring it in tomorrow and I will stamp you as completed.

If you are at home, and want to bookmark this website, push CTRL-D and it will save this website.

## Tuesday, February 5, 2008

### Exponents review

Home work today is to finish the worksheet we started in class. Homework tomorrow will be posted on this website so be sure you come back tomorrow for that.

On the last section of problems on the worksheet, there are some tougher problems.

c. 2-2 x 2n = 8. The 8 must be rewritten as 23. the equation then becomes:
2-2 x 2n = 23
Now figure out what n is equal to.

Question d. is the same way
d.7n x 74 = 1/49. Rewrite 1/49 as 7-2.
The equation then becomes: 7n x 74 = 7-2

Hope this helps with others.

## Monday, February 4, 2008

### Negative Eponents

Homework today is page 307, numbers 1-29. Skip number 9

Also, remember that the negative numbers just mean that they flip over as a fraction.

For example, x-2 = 1/x2

it even works with coefficients. If you have 2x-2, this equals 2/x2

On this Friday, I will be collecting all your notes and warm-ups for the week. Be sure that you write everything down. My system hasn't been perfected but the assignments will be worth about 15 points. That is as much as a homework tracking sheet. Be sure you do them. Period 1 and period 5 will be changing seats tomorrow.