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Simplify this expression:
411 - 3x) + 7x- 8
Σ
a
sin cos tan sin cos'tan ö - Lan
In
csc seccot log log
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In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

What properties allow transformation to be used as a problem solving tool

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?