Friday, October 16, 2009

Jamie's scribe for Oct. 14, 2009

For homework, we had to write down and define key words.

  • Two-term ratios - Compares two quantities measured in the same units. It can be written as a:b or a to b.
  • Three-term ratios - Compares three quantities measured in the same units. It can also be written as a:b:c or a to b to c.
  • Part-to-part ratios - Compares different parts of a group to each other.
  • Part-to-whole ratios - Compares one part to the whole group. Can be written as a:b or a/b.
  • Rate - A comparison of two quantities measured in different units.
  • Unit rate - A rate in which the second term is 1.
  • Unit price - A unit rate that involves prices.
  • Proportion - An equation that says that two ratios or two rates are equal.

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