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To: CharlesWayneCT

Never was good at algebra. Just a dumb question here. In solving the area of a triangle is a=1/2bh equal to a=1/2hb equal to a=bh/2 ?


288 posted on 07/29/2012 2:04:07 PM PDT by Dust in the Wind (U S Troops Rock)
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To: Dust in the Wind

Yeah, that’s transitivity.

It doesn’t matter what order you do it in.

1/2 x b x h = b x 1/2 x h = b x h x 1/2 = h x 1/2 x b = h x b x 1/2.

Think of it like a scale. You’ve got six weights, two are b, two are h, and two are 1/2.

B, H and 1/2 all weigh the same, it doesn’t matter what order you put them on.


295 posted on 07/29/2012 2:27:48 PM PDT by JCBreckenridge (Texas, Texas, Whisky)
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To: Dust in the Wind

Yes, Multiplication works the same regardless of order. For example, 3x5 is the same as 5x3. That should make sense when you picture multiplication as a repetitive addition. If you have 4 piles of 5 pennies, it is the same amount of money as if you have 5 piles of 4 pennies.

Of course, your question already shows knowledge of the “language” of math. You knew how to construct a sentence that reflects a math question. It was funny how many people needed work to understand the shorthand you just used. “What happened to the multiplication sign?”


308 posted on 07/29/2012 6:41:03 PM PDT by CharlesWayneCT
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