Suzzene's Surface Area and Volume Post

Surface Area Questions:

Cylinder:

Rectangular Prism:

Cylinder:

Volume

Cylinder:

Rectangular Prism:

Triangular Prism 1:

Triangular Prism 2:

Textbook Questions

I will be answering the 3 Textbook Questions # 10, 12 and 17.

For Number 10 it says:

The answer to that question is approximately 5.2. I got that answer by doing the following:

For Number 12, it says:

A)

Approximately 3.2 m.

B) According to the calculator, the right answer is 3.3 m

C) Yes, the rug will fit because the area of the room is 20^2 m, therefore, it is bigger than the rug which is 11 m^2 by 9 m.

For Number 17 it says:

A) The area of the picture is 324 m^2. I got that answer by going 18 x 18.

B) The area of the board is 1296 m^2. I got that answer by multiplying 18x18's product by 4.

C) The dimensions of the board is 36 x 36. I got the answer by finding the root of 1296 on a calculator.

Here is a game that may help you with remembering the perfect square numbers:

http://www.softschools.com/mathg.jsp

PARENT QUIZ:

1. The Pythagorean Relationship states that the ares areas of the two shortest sides of the right triangle, the legs, is supposed to equal the area of the longest side--the hypotenuse. The formulae for the Pythagorean Relationship is a² + b² = c². (C must always be the hypotenuse.)

2. c² = a² + b²

c² = 12² + 5²

c² = 144 cm + 25 cm

c² = 169 cm

Square root of 169 cm = 13 cm

c = 13 cm

3. c² = a² + b²

11² = 8 cm² + 6cm²

(8 x) + (6 x 6) = (11 x 11)

64 + 36 = 121

100 =/ 121

No, this is not a right triangle because the hypotenuse do not equal the legs therefore the formula c² = a² + b² does not work with it.

Suzzene's scribe post

*Taxes not included.

1st Question:

Store A:

Skates = $200

50% Off.

Store B:

Skates = $200

Day 1- 30% Off.

Day 2- 20% Off.

Finding the total price for Store A:

For finding how much the sale price is for Store A, I would first find the discount. I'd find the answer by doing the decimal way.

50/100 = 0.50

0.50 x 200= 100

Then, I would subtract the original price to the discount.

200 - 100= $100

Therefore, in Store A, you would have to pay $100.

Finding the total price for Store B:

Like in Store A, I would first find the discount.

30/100= 0.30

0.30 x 200= 60

Then subtract it with the Original Price again.

200-60= $140

On the first day, you'd get the skates for $140 dollars. If you go the second day, to find how much it is, you have to do the whole process all over again except, you have a new 100%. Instead of 200, it will be 140.

20/100= 0.20

0.20 x 140= 28

Lastly, subtract once more.

140-28= $112

In the end, it shows that you can save more, ($12) if you buy at Store A instead of Store B.

2nd Question:

Store C:

Boots = $270

40% Off.

Store D:

Boots = $270

Day 1- 30% Off.

Day 2- 10% Off.

Finding the total price for Store C:

Re-do the whole process done in the 1st question.

As a reminder, first, you must find the discount.

40/100= 0.40

0.40 x 270= $108

Then, subtract original price with discount.

270-108= $162.

Therefore, if you bought in Store C, you would get the boots for $162.

Finding the total price for Store D:

Find the discount first.

30/100= 0.3

0.3 x 270= $81

Subtract Original Price with discount.

270 - 81= $189

If you bought the boots on the first day, you would buy it for $189. If you bought it on the second day...

Finding the discount:

10/100= 0.10

0.10 x 189= $18.90

Subtracting the discount from the Day 1 price, it would be $170.10

189- 18.90= $170.10

Therefore, you would save more money if you bought it at Store C instead of Store D.

If you are kind of confused, here's a video that may help you.:

Here is also a game about discounts and such.

http://www.mathplayground.com/percent_shopping.html

Good Luck and Have fun!

P.S., due to Rose's suggestion, I decided to put the homework.

Remember, don't forget to do pages 148-151 in mytextbook.ca, or at least, some of them! :)

Suzzene's graphing post.

1. Use your notes to list the different types of graphs. Please list the advantages and disadvantages of each graph.

Bar Graphs-

Advantages: Best for comparing data across.

Disadvantages: Can be easily manipulated to yield false impressions.

Circle Graphs-

Advantages: Best for comparing part to the whole using percents. Sum of percents in a circle graph is 100%

Disadvantages: It is in percents and not in exact numbers.

Pictographs-

Advantages: Best for comparing data that can be easily counted and represented using symbols.

Disadvantages: It is good for only whole numbers and halves.

Line Graphs-

Advantages: Best for showing data over time.

Disadvantages: Can only be used for data over time.

Double Bar Graphs-

Advantages: Best for comparing two sets of data across categories.

Disadvantages: You can

2. How can graphs be misleading. Show 3 ways.

2a) The following chart shows Pizza Sub Sales over a month. What 2 graphs would show the information accurately?

2b) If you were selling Pizza Subs would you continue? How does your graph explain your answer.

Yes because you can the sales are increasing per week.

4. Below you see 2 different examples of graphs showing healthy choices sold at the canteen. If you had to convince Mrs Mota that we should continue selling healthy choices which graph would you choose?

Line graph because it shows the data over time.

4a) Change each graph so that your information looks even MORE impressive. You may not change the data just the graphs.

Suzzene's Pay It Forward.

Part 1

Before:

I want to help people wo aren't fortunate enough. I might not make much of a difference but I will try my best. I want to help by donating as much money as I can. I will earn by saving money from my allowances, helping with housework and maybe a little babysitting. I am going to Shiloam Mission, Winnipeg Harvest or some other organization. My first choice at the moment is Shiloam Mission. I am planning to do this when I get an appropriate amount of money.

After:
We went up to the front desk and told the woman, "We're here to donate." She looked surpried. She told us her name was Linda. One of my favourite quotes from her was, "Do the best you can. Be the best you can be." I did not ask her to, "pay it forward" because I believe she has been "paying it forward" along with the rest of Shiloam Mission crew.

Part 2

What was your Pay It Forward act of kindness?
My Pay It Forward is, I went to Shiloam Mission with Ghelo and donated $30.00

Why did you choose this activity?

We chose this activity because we wanted to help Shiloam Mission at least a little bit for their hard work trying to feed people who aren't able to.

Who did you help?

I believe that I contributed to a cause that helps people that don't have enough food.

What did you do?
Me and Ghelo donated money to Shiloam Mission.

When did you do you act of kindness?
We did our act of kindness on Thursday.

Part 3

How did your act of kindness go?
It went well.

What Happened?

She looked surprise for a bit then after, she gave us a tour of the place!

How did you feel?

I felt proud to have donated and like it is one of the best things to do with money.

How did the person or people react?

They were shocked. The person I talked to was about to leave but when we told her we were to donate, she still gave us a tour despite her busy schedule.

Did you ask the person or people to "Pay It Forward"?

No.

How did they react to your request?

I did not ask them.

If you did not ask the person to "Pay It Forward" how come?
Because every single day, they have been "Paying It Forward."

Part 4

Why is the idea of "Pay it Forward" important?
Because if it goes successful, everyone would have done a good deed to someone and who knows, they might like it and start doing more nice things for people.

Has your act of kindness made a difference?
May be small but I believe so. I hope the money we donated helped buy an extra canned goods or medicine or something.

A letter/receipt they sent us:

Suzzene's Proportion Post

Task 1:

Please define-

Ratio- The comparison of two numbers.
Example: 1:4

Rate- A comparison of two quantities measured in different units.

Example: $0.85/orange

Proportion- An equation which states that two ratios are equal.

Example: 1/2= 5/10

Task 2:

1. 5 hours to travel 360 miles is about _____ mph

x= 72/mph

2. As a playgroup worker, if I increase the amount of apple juice I am serving at the playgroup from 25 ml to 100 ml, how much should I increase the the orange juice to, to keep the quantities in the same proportion? The orange juice is 50 ml to start with.

x= 200 ml

Task 3:

What are the three ways you can prove that equivalent ratio statements are true?
3/4 = 12/16 or 4/9 = 16/32

Task 4:


Task 5:

1.Does this seem fair?
No.

2.With what you know about proportion look and read what is in the image above. Does it seem just and fair? Why have you made this choice?
It is not fair at all because a rich person who scammed 3 billion dollars out of people only need to serve in jail for 3.5 years while a guy who desperately needed money for food and such stole only $100 and yet, needs to serve for 15 years.

4.What would you have done if you were the judge?
I would've given the homeless man food and maybe around 3 months of community service and 15 years for the man who had scammed people out of 3 billion dollars.