maddie183
maddie183
27-04-2017
Mathematics
contestada
Evaluate 3x +9 when x=4
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celinekrugielki
celinekrugielki
27-04-2017
So you can use substitution for this problem which is plugging in the 4 for x:
3(4)+9
then you know that you can simplify it even more to
12+9
that can be simplified even more to
21
which is in simpliest form
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rianne14a
rianne14a
27-04-2017
3x+9 is or equals to 21
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