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Mathematics, 09.12.2019 01:31 yesimabadbih5147
Tania lived in columbia and dominican republic for a total period of 14 months in order to learn spanish. she learned an average of 130 new words per month when she lived in columbia, and an average of 150 new words per month when she lived in the dominican republic. in total, she learned 1,920 new words. select two equations that could be used to model the situation.
a
130c + 150d = 1400
b
c + d = 14
c
130c + 150d = 1920
d
14c + 14d = 1920
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