Krystal's Growing Post

RECTANGULAR PRISM
TOP;FRONT;SIDE

Area =LxW Area=LxW Area=LxW
Area = 5x8 Area=8x8 Area=8x8 Area =40cm2 Area=64cm2 Area=64cm2

TSA= TOP + TOP + FRONT + FRONT + SIDE + SIDE
= 40+40+64+64+64+64
= 208 cm2



























TRIANGULAR PRISM

a = b x h ÷ 2

a = 10 x 12 ÷ 2

a = 60cm²

a = l x w

a = 10 x 4

a = 40cm²

a= l x w

a = 10 x 4

a = 40cm²

a= l x w

a= 10x 12

a = 60cm²

TSA

= (triangle)+(triangle)+(rectangle)+(rectangle)+(rectangle)
= 60+60+60+40+40

= 260cm²

Cylinder
Radius:

r = d ÷ 2

r = 12 ÷ 2

r = 6cm²

Formula:

sa = 2 x (pi x r²) + (pi x d x h)

sa = 2 x 3.14 x 6 x 6 + 3.14 x 6 x 12

sa = 226.08+ 226.08

sa = 452.16 cm²

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Krystal`s Scribe for January. 14, 2010

Decimal to Percent=You just have to move the decimal 2 places to the right.Another way to do it is to multiply it by 100. For example. 1.25X100 =125. Just add the percent sign. I find it way easier by doing it with multiplying by 100.

Fraction to Percent= The way I learned was a little different.Since fractions is the same as division, I just divide the fraction number and get the percentage. For example . 61 over 100= 61 divided by 100 = 0.61,just add the percent sign.

Decimal to Fraction= When a decimal has 2 numbers after the decimal it`s out of 100, if it only has 1 number after the decimal, its out of 10, if it has 3 numbers after the decimal it`s out of 1000.ect.For example. 0.005= 5 over 1000. But if its a decimal like this "3.2", 3 is the whole and 2 is out of 10 since it`s the only number after the decimal.the fraction would be , 3 as the whole and 2 over 10.Don`t forget to simplify so it would be , 3 as a whole and 1 over 5. To simplify it , just divide it by 2.

Fraction to Decimal= Remember, a fraction is division turned up-right. That means if the fraction was, 7 over 10, side-to-side would be, 7 divided by 10 =0.7 . Easy,right ? But what if your fraction has a whole number ? for example : 1 and 1 over 4, since the 1 over 4 is simplified, think of it as not simplified "25 over 100" = 25 divided by 100 = 0.25. Take the ".25" and do nothing to the whole number,Then you have "1.25". Sorry, I tried explaining it as best as I could. It`s really easy if you understand what I`m talking about.

BY THE WAY ! Sorry it`s late...

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how much do the coins add up to ?
All the coins in the jar add up to $100

Would the jar look the same if the money was Canadian?
It would have less of each coin because Canada has Loonies and Toonies compared to Americans that have bills as dollars. So it would look a lot less if it was all Canadian.

Coin Math part 2

If you started dropping coins into the jar on January 1 , 2010, what day would you finish filling up the jar?

If the jar was filled with all american coins, it would have 1280 coins in it. This filled up 3 quarters of the jar. If you find how much coins can fit in the whole jar it will make this problem easier. So what you do is find how much 1280 divided by 3 multiplied by 4 is.
This gives you about 1707.

So if there is 1707 coins in there jar it would take me approximately 4.79 years to fill the whole jar by putting one coin in it each day. So it would take be around 4 years, so what I'm thinking that it is 79 percent of the year, and that would be around 284 days, I estimate 4 years and 284 days,
That would be October 11, 2014.

How much of the jar is filled with Canadian coins ?

The jar has 370 coins in it. We have found out that 3/4 of the jar is 1280 , so if you divide that by 4 you get 320 , so now we know its more than 1/4 of the jar. So I'm guessing its around 27-30 percent of the whole jar.

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Bob #2

-I learned how to use a ratio table
- I need to improve on showing my answer in lowest terms.
- I also need to read the questions more carefully so i don't forget out any important details.

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Krystal's BOB Ratio

Part to Part:
Greens to Yellow
7:6
Yellows to Blue
6:2
Blues to Greens
2:7

Part-To-Total Ratios
Greens to total
5: 11
Yellows to total
6:11

Three-Part Ratios
Blues to Yellows to Greens
1:2:5
Reds:Blue:Yellows
3:5:2

Ratio Notation
Blues to Yellows- 1:2
Ratio- 1:2
Fraction- 1/2
Decimal- 0.5
Percent- 50%

Questions:

1. What is the percent for '2:7'? (Blue:Green)
2. What would be different if the total number of candies changes to 12?
3.What is the decimal for '7:6' (Green:Yellow)

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Four 4`s

I know this is super duper late...SORRY !! But at least im trying to do it :)



^^Their the same.

- Their both the same because their both division, they just put different signs that practically mean the same thing.

- In mathematical "Terms" "/" usually means division.So that means ,÷ and / , mean the exact same thing although they look completely different.So to put it in an easier way, they both mean "(4 ÷ 4) +( 4 ÷ 4) = 2".


AGAIN ! sorry its late !


sorry.LOL

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Krystal and Bob :)

3 Things I know about graphing.

1.Graphing is to explain the relationship of 1 quality to another.

2.Graphs MUST have a title and labels.Not putting labels and a title might confuse you or deduct your marks.

3.If on a bar graph, it MUST have a X and Y axis.


I know now that there are over 5 graphs you could use to explain your work.



SOOORRRY IM LATE !!

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Krystal`s Scribe September 30

Question 10:





Answers

A:The graph is misleading because it has a break between 0 and 200 on the vertical axis.

B:The profits increased four times from January to June.

C: The profits are two and a half times higher then they were in January.

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