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select the best expression to describe the change in temperature from-5

Algebra
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select the best expression to describe the change in temperature from -5 degrees to 45 degrees.

Mar 21st, 2015

Let x represent temperature

change in temperature=

Mar 21st, 2015

X2-X1=45-(-5)

    =50

Delta x=50

Or

x2-x1=50

Mar 21st, 2015

where x1 is initial temperature

   x2 is final temperature

delta x represents change in temperature

Mar 21st, 2015

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