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Friday, October 14, 2011

hw #2-7 We Gotsk a New Gift from the Math Gods...

... the CROSS-PRODUCT PROPERTY!!!

hw#2-7: Due
     Tues Oct 18 (B)
pg 127-28 #1-8 All, #9-39 Mult of 3


Please read section 2-7 in the book carefully, particularly the discussion of "means and extremes" at the end of Problem 1 that we briefly discussed toward the end of class. 

In a technical sense, when you have a proportion a/b = c/d (read this as a over b equals c over d), a and d are considered to be the "extremes" (they are "on the ends") and b and c are considered to be the "means" (they are "in the middle").

SO, a fancy way of stating the CROSS-PRODUCT PROPERTY is to say that:

"The product of the means is equal to the product of the extremes"

... you're getting to be SOOOO SMART... I'm SOOOOO PROUD!!!!
-Mr. C 

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