Kenzie's surface area and volume post.

Triangle = bxh1xh2
=3x5x8.5
____
2
=3x5-
=15
____ x 8.5
2
=63.75cm3

Rectangle = lxwxh
=20x8x16
=2,560cm3

3/8 triangle = bxh h2
=8x4x6.5
___
2
=16x6.5
=16x6.5

1) 3
__ of 104 cm 3
8
= 104
___ x 3

= 39cm3

2) 3

____ - o.375

8

Cylinder= 3.14 r 2 x h
= pixrxrxh
= d
__ = 12
2 ___ = 6
2
= 3.14 x 6 x 6 x 15
= 1.695.6

Kenzie's Textbook questions

4) Estimate the square root of each number to one decimal place. Check with a calculator.

a) 72=84 b)103=10.14 c)55=74

6) What is an example of a whole number that has a square root between 9 and 10

9x9 = 81 10x10=100 answer: 93

7) Identify a whole number with a square root between 11 and 12

11x11=121 12x12=144 answer: 132

im not sure if those are from page 99 because i cant get onto the textbook site so yeah.

Kenzie's percent post

13.

70%

7. A herd of 100 Caribou was moved to a new location. The population increased by 10% the first year and the increased 20% the second year.

a)Find the population after the second year.

The population was 132 in the second year.
b)The increase was not 30% because the 20% increase in the second year was based on a new population after the first increase.

5)Ravi purchased 3 dvds for 19.99 each
Find the total cost for the DVDs including 5% GST 6% PST
66.60

sorry if any of this is wrong ):

Graphing post

1.) Pictograph

advantages:

• Easy to read
• Visually appealing
• Handles large data sets easily using keyed icons

Disadvantages:

• Hard to quantify partial icons
• Icons must be of consistent size
• Best for only 2-6 categories
• Very simplistic

Line graph:

Advantages:

• Can compare multiple continuous data sets easily
• Interim data can be inferred from graph line

Disadvantages:

• Use only with continuous data

Bar Graph:

Advantages:

• Visually strong
• Can easily compare two or three data sets

Disadvantages:

• Graph categories can be reordered to emphasize certain effects
• Use only with discrete data

Circle Graph:

Advantages:

• Visually appealing
• Shows percent of total for each category

Disadvantages:

• No exact numerical data
• Hard to compare 2 data sets
• "Other" category can be a problem
• Total unknown unless specified
• Best for 3 to 7 categories
• Use only with discrete data

Double Bar Graph:

Advantages:

• It compares two sets of data.

Disadvantages:

• you could get confused by both of them together even if they are in colour or black and white.

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

-A pictograph can misleading because the pictures might be bigger than the other picture, and it might make it seem like its bigger.

2a) The following chart shows Pizza Sub Sales over a month. What 2 graphs would show the information accurately?
- A line graph and a Bar Graph.

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

- Yes I would, because it shows that there are more sales.

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?

- I would choose the Line graph, because it shows how the sales went.

Ratio : is a quantitative relation between two amounts showing the number of times one value contains or is contained within the other.

example: A ratio is a comparison of two numbers. Separate the two numbers in the ratio with a colon. you want to write the ratio of 3 and 12.We can write this as 3:12 or as a fraction 3/12, and we say the ratio is three to twelve.

Rate : A measure, quantity, or frequency,one measured against some other quantity or measure.

example: You have a family of four people; 2 adults, one 9 year old child, and one 5 year old child. You have selected the American Plan Package (basic cabin rate + 3 meals per day) as the best package for your family. You would like cabin #33. Your rate would be $380.

Proportion: A part or number considered in comparative relation to a whole.

example: Solve for n: 1/2 = n/4. Using cross products we see that 2 × n = 1 × 4 =4, so 2 × n = 4. Dividing both sides by 2, n = 4 ÷ 2 so that n = 2.

5 hours to travel 360 miles is about _____mph

divided by 1

Hours 5 1

______ _______ = _________

Miles 360 1

divided by 1

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.

divided by 4

a 25 100

________ ______ = ________

o 50 12.5

divided by 4

Find a video about using proportion and embed it in your post. Make sure you select the small size of the video.

http://www.youtube.com/watch?v=Ss3fp51ghMo

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?

No it doesnt seem fair because the homeless guy only took 100$ and he didnt hurt anyone.

3) What would you have done if you were the judge?

if i were the judge i would have let the homeless guy go.