If 0 is in quadrant II and sin^2 0=3/4 evaluate tan0
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<h3>hello!</h3>
What is of 12?
In order to find it, we should divide 12 by 4:-
3
Now, solve our word problem:-
Matthew bought 12 roses. of these roses were white.
And we already know how to solve this problem :)
Hence,
Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I will comment and/or edit my answer :)
So the number of pencils bought can be represented by an equation: 
, where n is the number of notebooks bought. Since Helen bought 5 notebooks, simply plug 5 into n: 
. So Helen bought 12 pencils.