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Sunday, October 14, 2012

Madelaine's Proportion Post

Part 1 

Please define
  • ratio - two numbers that compare different types of units.
      eg. 3 pears to 5 oranges, 3:5, 3/5
  • rate - compares two quantities measured in different units.
     eg. 3 bags of dog food for $20 
  • proportion - an equation that proves that two ratios are equivalent.
      eg. 3/6 = 12/24, they are both half

Part 2 

  1. 5 hours to travel 360 kilometers is about 26 km/h.

      2.Emma saves 28 cents of every dollar that she earns.  Emma earned $75 last week.  How much money did Emma save last week? Emma saves 21 dollars after saving $75

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

3/4 = 12/16 4/9 does not = 16/32

The ways you can prove whether or not a a fraction is equivalent, you have to find their relationship vertically, horizontally and diagonally


Part 4

Task 5

  1. Does this seem fair? No I don't think this is fair.
  2. With what you know about proportion look and read what is in the image above.  Does it seem just and fair? Like I said, I think think its unfair and they both did wrong. The homeless man doesn't deserve 15 years in jail just for taking $100, the CEO deserves more time in jail, not just 40 months (roughly 3 years) because he schemed 3 billion dollars from a privately held mortgage lender. This proves how the court doesn't give fair times in jail and that they discriminate some people in a way, only because the man is homeless doesn't mean they should treat him any worse than the CEO. Just because he is homeless doesn't mean he deserves that much time in jail and meanwhile the CEO who did something worse than the homeless man doesn't have to serve as much time in jail as the homeless man.
  3. Why have you made this choice? I've made this choice because the CEO is more guilty because he planned to steal the 3 billion dollars since it was his scheme, the homeless man actually confronted to the police that he stole $100.
  4. What would you have done if you were the judge? If I were the judge I would extend the time that the CEO would have to serve in jail and lessen the time that the homeless man would have to serve in jail.

I chose to find the height of the tree next to the boy. An average 12 year old boy is around 5ft tall. I measured the boy on my screen and he is 4cm. then I measured how many times 4cm goes into the height of the tree.The tree is approximately 12cm. 

4x3 = 12 
5x3 = 15

The tree should be about 15 ft tall.


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