Tuesday, March 9, 2010

Today in Math class we worked on problem 4.2 in Comparing and Scaling. This problem involved applications for proportions. An example of this is "Jogging 5 miles burns about 500 calories. How many miles will Tanisha need to jog to burn off the 1,200-Calorie lunch she ate?" We also had to come up with a proportion for every problem we solved. A proportion for this problem is 5/x miles=500/1,200 calories, X=12. In this proportion, x was how many miles Tanisha would need to run in order to burn the calories. This proportion shows the relationship between calories burned, and miles run. It shows that the relation ship is that about 100 times as much calories are burned than the miles run, in the problem it was 5 miles burns 500 calories.

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